{"title":"Gifts for biologists","description":"\u003cp\u003eBiology is the science of what living things are made of and how they copy themselves, and it has produced some of the most recognisable shapes in all of science. This is jewelry built from them: the DNA double helix, the chromosome, the antibody, the mitochondrion, the virus drawn the way it actually assembles.\u003cbr\u003e\u003cbr\u003eEach piece is faithful to the real structure. Necklaces, rings, and earrings in sterling silver and 18K gold vermeil. Choose by the molecule or the cell someone has spent the most time thinking about.\u003cbr\u003e\u003cbr\u003eThis is a selection of our most popular pieces. There's much more in the \u003ca href=\"\/collections\/genetics\"\u003efull genetics collection\u003c\/a\u003e if you'd like to keep looking.\u003c\/p\u003e","products":[{"product_id":"chromosome-studs","title":"round chromosome studs | silver","description":"\u003ch2\u003eRound chromosome studs | silver\u003c\/h2\u003e\n\u003cp\u003eThe chromosome shape as a stud, in 925 sterling silver. The classic X-form of a condensed metaphase chromosome at 11 mm, sized for daily wear and read instantly by anyone who has stared at a karyotype. The geometry is small. The reference is anyone whose work involves chromosomes as physical objects rather than abstractions.\u003c\/p\u003e\n\u003ch2 style=\"margin-top: 2em;\"\u003eThe Science Behind Condensed Chromosomes\u003c\/h2\u003e\n\u003cp\u003eThe familiar X-shape of a chromosome is not its everyday form. Through most of the cell cycle, DNA is loosely packaged as chromatin and spread throughout the nucleus. Only at metaphase, immediately before division, do chromosomes condense into the discrete bodies that show up in karyograms. Each metaphase chromosome is two sister chromatids joined at a centromere, with telomeres capping the ends. Condensation is driven by condensin complexes that loop and compact chromatin, organising it for accurate segregation by the mitotic spindle. The shape on these studs is the moment a cell has packaged its genome for division.\u003c\/p\u003e\n\u003ch2 style=\"margin-top: 2em;\"\u003eWho Tends to Wear This\u003c\/h2\u003e\n\u003cp\u003eGeneticists, cell biologists, and clinical staff who work with karyotypes.\u003c\/p\u003e\n\u003cul\u003e\n\u003cli\u003ecytogeneticists and clinical genetic counsellors\u003c\/li\u003e\n\u003cli\u003ecell biologists working on mitosis and chromosome dynamics\u003c\/li\u003e\n\u003cli\u003elaboratory technologists and chromosome analysts\u003c\/li\u003e\n\u003cli\u003estudents of genetics or molecular biology\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp\u003eMost often given as a graduation gift for a clinical genetics fellowship or as a quiet daily-wear piece for a cytogeneticist.\u003c\/p\u003e\n\u003ch2 style=\"margin-top: 2em;\"\u003eExplore Related Genetics Jewelry\u003c\/h2\u003e\n\u003cul\u003e\n\u003cli\u003e\u003ca href=\"https:\/\/sciencejewelry1824.shop\/products\/chromosome-studs-flat\"\u003eFlat chromosome studs | silver\u003c\/a\u003e\u003c\/li\u003e\n\u003cli\u003e\u003ca href=\"https:\/\/sciencejewelry1824.shop\/products\/chromosome-flat\"\u003eFlat chromosome necklace | silver\u003c\/a\u003e\u003c\/li\u003e\n\u003cli\u003e\u003ca href=\"https:\/\/sciencejewelry1824.shop\/products\/chromosome-round\"\u003eRound chromosome necklace | silver\u003c\/a\u003e\u003c\/li\u003e\n\u003cli\u003e\u003ca href=\"https:\/\/sciencejewelry1824.shop\/products\/chromosomes\"\u003eXX chromosomes ring | silver\u003c\/a\u003e\u003c\/li\u003e\n\u003cli\u003e\u003ca href=\"https:\/\/sciencejewelry1824.shop\/products\/trisomie-21-down-syndrome\"\u003eTrisomy 21 necklace | silver\u003c\/a\u003e\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch2 style=\"margin-top: 2em;\"\u003eFrequently Asked Questions\u003c\/h2\u003e\n\u003ch3 style=\"margin-top:1.75em;\"\u003eWhat does the stud shape represent?\u003c\/h3\u003e\n\u003cp\u003eA condensed metaphase chromosome in its classic X-orientation: two sister chromatids joined at a centromere, with the four arms extending outward. It is the form chromosomes take only briefly during cell division, but it is the form everyone learns first.\u003c\/p\u003e\n\u003ch3 style=\"margin-top:1.75em;\"\u003eRound versus flat: what is the difference?\u003c\/h3\u003e\n\u003cp\u003eRound chromosome studs (this product) show the chromosome as a three-dimensional rounded form, the way it appears in a stained metaphase spread. Flat chromosome studs show the same shape as a two-dimensional silhouette, closer to an ideogram. Same size, different rendering.\u003c\/p\u003e\n\u003ch3 style=\"margin-top:1.75em;\"\u003eWhat are the specs and what is the return policy?\u003c\/h3\u003e\n\u003cp\u003e925 sterling silver, 11 mm size, ear nuts with sterling silver core. Nickel-free and hypoallergenic. Ships free worldwide via DHL Express in 1-5 business days, with all import duties and taxes covered. 30-day “Love It or Return It” returns.\u003c\/p\u003e\n\u003ch3 style=\"margin-top:1.75em;\"\u003eAre there other chromosome formats in the catalog?\u003c\/h3\u003e\n\u003cp\u003eYes. Flat and rounded chromosome necklaces, the XX chromosomes ring, and a Trisomy 21 necklace cover the rest of the chromosome family. The studs are the most discreet daily-wear option.\u003c\/p\u003e\n","brand":"sciencejewelry1824","offers":[{"title":"Default Title","offer_id":26494881223,"sku":"ER0047-S","price":160.0,"currency_code":"EUR","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/1411\/4806\/files\/round-chromosome-studs-silver-earrings-science-jewelry-sciencejewelry1824-51402705305948.png?v=1699274768"},{"product_id":"silver-dna","title":"DNA ring | silver","description":"\u003ch2\u003eDNA ring | sterling silver\u003c\/h2\u003e\n\u003cp\u003eThe double helix is the most recognised shape in biology, and the ring form is the quietest way to wear it. It sits closer to bench work than a necklace does. No chain to catch on a glove, no pendant to swing into the fume hood. For someone whose work is shaped, daily, by this molecule.\u003c\/p\u003e\n\u003ch2 style=\"margin-top:2em;\"\u003eThe Science Behind the Double Helix\u003c\/h2\u003e\n\u003cp\u003eThe structure was confirmed in 1953 by Watson and Crick at Cambridge, with credit attribution that has only been corrected in the decades since. Rosalind Franklin's X-ray crystallography at King's College London produced Photo 51 in 1952, the image that showed the helix was right-handed with the backbone on the outside. Watson saw the photograph without Franklin's knowledge, shown to him by her colleague Maurice Wilkins. Franklin died in 1958 at age 37, and the Nobel Prize cannot be awarded posthumously. The 1962 prize went to Watson, Crick, and Wilkins. Her contribution is now widely recognised.\u003c\/p\u003e\n\u003ch2 style=\"margin-top:2em;\"\u003eA Quiet Symbol For\u003c\/h2\u003e\n\u003cp\u003eMost people who buy a DNA ring already know what they're getting. The piece doesn't need to explain itself.\u003c\/p\u003e\n\u003cul\u003e\n\u003cli\u003emolecular biologists and geneticists\u003c\/li\u003e\n\u003cli\u003ebiochemistry students at any stage\u003c\/li\u003e\n\u003cli\u003eresearchers who prefer a ring to a necklace\u003c\/li\u003e\n\u003cli\u003eanyone whose work centres on the molecule\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp\u003eOften given for a graduation, a thesis defence, or a first lab role.\u003c\/p\u003e\n\u003ch2 style=\"margin-top:2em;\"\u003eExplore Related Genetics Jewelry\u003c\/h2\u003e\n\u003cul\u003e\n\u003cli\u003e\u003ca href=\"https:\/\/sciencejewelry1824.shop\/products\/dna-1\"\u003eDNA ring engraved | silver\u003c\/a\u003e\u003c\/li\u003e\n\u003cli\u003e\u003ca href=\"https:\/\/sciencejewelry1824.shop\/products\/dna-9k-solid-gold\"\u003eDNA ring | 9K solid yellow gold\u003c\/a\u003e\u003c\/li\u003e\n\u003cli\u003e\u003ca href=\"https:\/\/sciencejewelry1824.shop\/products\/crossed-dna-ring\"\u003ecrossed DNA ring | silver\u003c\/a\u003e\u003c\/li\u003e\n\u003cli\u003e\u003ca href=\"https:\/\/sciencejewelry1824.shop\/products\/dna\"\u003eDNA necklace V | silver\u003c\/a\u003e\u003c\/li\u003e\n\u003cli\u003e\u003ca href=\"https:\/\/sciencejewelry1824.shop\/products\/dna-18k-gold-plated\"\u003eDNA necklace V | gold vermeil\u003c\/a\u003e\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003csection class=\"product-faq\"\u003e\n\u003ch2 style=\"margin-top:2em;\"\u003eFAQ\u003c\/h2\u003e\n\u003ch3 style=\"margin-top:1.75em;\"\u003eWill a working scientist actually wear this?\u003c\/h3\u003e\n\u003cp\u003eYes. The ring is more practical for lab work than a necklace and gets a different reaction. It identifies the field without requiring any explanation, and researchers tend to recognise it from across a room before noticing it's jewelry.\u003c\/p\u003e\n\u003ch3 style=\"margin-top:1.75em;\"\u003eHow is the discovery now attributed?\u003c\/h3\u003e\n\u003cp\u003eWatson, Crick, and Wilkins received the Nobel in 1962. Rosalind Franklin's role was largely uncredited until well after her death in 1958. Her X-ray work, particularly Photo 51, is now universally recognised as essential to the structural model. Most current accounts treat the discovery as one built on her data without her knowledge.\u003c\/p\u003e\n\u003ch3 style=\"margin-top:1.75em;\"\u003eWhat sizes does it come in, and what's the material?\u003c\/h3\u003e\n\u003cp\u003eAvailable in US sizes 5 through 9 in 925 polished sterling silver, nickel-free and hypoallergenic. The 30-day “Love It or Return It” policy covers a size exchange if it arrives wrong. We ship worldwide via DHL Express in 1-5 business days with all duties and taxes covered.\u003c\/p\u003e\n\u003ch3 style=\"margin-top:1.75em;\"\u003eIs there a necklace version of the same design?\u003c\/h3\u003e\n\u003cp\u003eYes. The DNA necklace exists in V orientation in sterling silver and 18k gold vermeil. Same molecule, different format. The ring is for daily wear at the bench. The necklace reads from across a room.\u003c\/p\u003e\n\u003c\/section\u003e\n","brand":"sciencejewelry1824","offers":[{"title":"5","offer_id":56545555349890,"sku":"RG0010-S-5","price":140.0,"currency_code":"EUR","in_stock":true},{"title":"6","offer_id":56548236231042,"sku":"RG0010-S-6","price":140.0,"currency_code":"EUR","in_stock":true},{"title":"7","offer_id":56548236263810,"sku":"RG0010-S-7","price":140.0,"currency_code":"EUR","in_stock":true},{"title":"8","offer_id":56548236296578,"sku":"RG0010-S-8","price":140.0,"currency_code":"EUR","in_stock":true},{"title":"9","offer_id":56548236329346,"sku":"RG0010-S-9","price":140.0,"currency_code":"EUR","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/1411\/4806\/files\/dna-ring-silver-rings-science-jewelry-5-sciencejewelry1824-51401474539868.png?v=1699261987"},{"product_id":"chromosomes","title":"XX-chromosomes ring | silver","description":"\u003ch2\u003eXX chromosomes ring | silver\u003c\/h2\u003e\n\u003cp\u003eThe XX karyotype as a ring, in 925 sterling silver. Two X chromosomes side by side, in the format used for every cytogenetics report and every introductory genetics lecture. The geometry is small but the reference is the chromosomal basis of mammalian sex determination and a century of work on X inactivation.\u003c\/p\u003e\n\u003ch2 style=\"margin-top: 2em;\"\u003eThe Science Behind XX Chromosomes\u003c\/h2\u003e\n\u003cp\u003eIn 1961, Mary Lyon proposed that in every XX female mammal, one of the two X chromosomes is randomly and permanently silenced in each cell during early development. The inactivated X condenses into a Barr body, visible as a dense spot in the nucleus. Lyon's hypothesis explained why females with an extra X chromosome are largely unaffected (the additional copies are silenced) and why calico cats have patches of different colours (different X chromosomes are inactivated in different cell lineages). Silencing is established by XIST, a long non-coding RNA that coats the chromosome it is transcribed from. XIST was an early example of RNA-based gene regulation and remains a central case study in the field.\u003c\/p\u003e\n\u003ch2 style=\"margin-top: 2em;\"\u003eWorn By\u003c\/h2\u003e\n\u003cp\u003eGeneticists, cell biologists, and people for whom the XX karyotype carries personal weight.\u003c\/p\u003e\n\u003cul\u003e\n\u003cli\u003egeneticists, cytogeneticists, and clinical genetic counsellors\u003c\/li\u003e\n\u003cli\u003ecell biologists working on epigenetics or chromosome biology\u003c\/li\u003e\n\u003cli\u003edevelopmental biologists studying X inactivation and dosage compensation\u003c\/li\u003e\n\u003cli\u003erecipients for whom the XX karyotype is personally meaningful\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp\u003eMost often given as a milestone gift after a defended thesis on chromosome biology, or as a personal piece marking the start of a clinical genetics fellowship.\u003c\/p\u003e\n\u003ch2 style=\"margin-top: 2em;\"\u003eExplore Related Genetics Jewelry\u003c\/h2\u003e\n\u003cul\u003e\n\u003cli\u003e\u003ca href=\"https:\/\/sciencejewelry1824.shop\/products\/chromosome-flat\"\u003eFlat chromosome necklace | silver\u003c\/a\u003e\u003c\/li\u003e\n\u003cli\u003e\u003ca href=\"https:\/\/sciencejewelry1824.shop\/products\/chromosome-round\"\u003eRound chromosome necklace | silver\u003c\/a\u003e\u003c\/li\u003e\n\u003cli\u003e\u003ca href=\"https:\/\/sciencejewelry1824.shop\/products\/chromosome-studs-flat\"\u003eFlat chromosome studs | silver\u003c\/a\u003e\u003c\/li\u003e\n\u003cli\u003e\u003ca href=\"https:\/\/sciencejewelry1824.shop\/products\/trisomie-21-down-syndrome\"\u003eTrisomy 21 necklace | silver\u003c\/a\u003e\u003c\/li\u003e\n\u003cli\u003e\u003ca href=\"https:\/\/sciencejewelry1824.shop\/products\/silver-dna\"\u003eDNA ring | silver\u003c\/a\u003e\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch2 style=\"margin-top: 2em;\"\u003eFrequently Asked Questions\u003c\/h2\u003e\n\u003ch3 style=\"margin-top:1.75em;\"\u003eWhat does XX represent in this context?\u003c\/h3\u003e\n\u003cp\u003eThe chromosomal basis of female sex determination in humans and most mammals. In a karyotype report, XX denotes two X chromosomes, the configuration that anchors X inactivation, dosage compensation, and a substantial portion of clinical genetics.\u003c\/p\u003e\n\u003ch3 style=\"margin-top:1.75em;\"\u003eWhy a ring rather than a necklace?\u003c\/h3\u003e\n\u003cp\u003eThe XX motif renders cleanly at ring scale and reads at close range, where the two chromosome shapes can sit side by side without losing detail. People who work in cytogenetics or genetic counselling tend to want the karyotype on the hand, where it is visible during conversation.\u003c\/p\u003e\n\u003ch3 style=\"margin-top:1.75em;\"\u003eHow do I size it, and what is the return policy?\u003c\/h3\u003e\n\u003cp\u003eThe ring is available in US sizes 5, 6, 7, 8, and 9. If you are unsure, measure a ring you already wear and match by inner diameter. 925 sterling silver, nickel-free and hypoallergenic. Ships free worldwide via DHL Express in 1-5 business days, with all import duties and taxes covered. 30-day “Love It or Return It” returns, and exchanges are straightforward if the size is off.\u003c\/p\u003e\n\u003ch3 style=\"margin-top:1.75em;\"\u003eWhat other chromosome formats are available?\u003c\/h3\u003e\n\u003cp\u003eThe catalog includes flat and rounded chromosome necklaces, flat chromosome studs, and a Trisomy 21 necklace. The XX motif as shown here is currently produced as a ring only.\u003c\/p\u003e\n","brand":"sciencejewelry1824","offers":[{"title":"5","offer_id":56545549648258,"sku":"RG0032-S-5","price":150.0,"currency_code":"EUR","in_stock":true},{"title":"6","offer_id":56548233281922,"sku":"RG0032-S-6","price":150.0,"currency_code":"EUR","in_stock":true},{"title":"7","offer_id":56548233314690,"sku":"RG0032-S-7","price":150.0,"currency_code":"EUR","in_stock":true},{"title":"8","offer_id":56548233347458,"sku":"RG0032-S-8","price":150.0,"currency_code":"EUR","in_stock":true},{"title":"9","offer_id":56548233380226,"sku":"RG0032-S-9","price":150.0,"currency_code":"EUR","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/1411\/4806\/files\/028_XXchrom_silver.png?v=1699716753"},{"product_id":"insulin","title":"insulin necklace | silver","description":"\u003ch2\u003eInsulin necklace | sterling silver\u003c\/h2\u003e\n\u003cp\u003eInsulin is the peptide hormone that endocrinologists, diabetologists, and biochemists return to across every framework: the structure with two chains and three disulfide bonds, the receptor cascade, the GLUT4 translocation that glucose uptake depends on, the clinical history, the metabolic disease. Every angle of it matters.\u003c\/p\u003e\n\n\u003ch2 style=\"margin-top: 2em;\"\u003eThe Science Behind Insulin\u003c\/h2\u003e\n\u003cp\u003eInsulin is a 51-amino acid peptide hormone synthesised by pancreatic beta cells in response to elevated blood glucose. The A chain (21 residues) and B chain (30 residues) are linked by two interchain disulfide bonds plus one intrachain disulfide in the A chain. It binds the insulin receptor (a receptor tyrosine kinase) and triggers a signalling cascade that increases glucose uptake, promotes glycogen synthesis, and suppresses gluconeogenesis. Frederick Banting and Charles Best isolated it in 1921, first administered it to a human in 1922, and the discovery transformed diabetes from a fatal disease to a manageable condition. Frederick Sanger sequenced it in 1955, making insulin the first protein ever sequenced (Nobel Prize 1958).\u003c\/p\u003e\n\n\u003ch2 style=\"margin-top: 2em;\"\u003eThe Audience\u003c\/h2\u003e\n\u003cul\u003e\n\u003cli\u003eendocrinologists and diabetologists who work with it daily\u003c\/li\u003e\n\u003cli\u003ediabetes researchers and biochemists studying the insulin cascade\u003c\/li\u003e\n\u003cli\u003epeople living with type 1 diabetes and their families\u003c\/li\u003e\n\u003cli\u003emedical students who recognise insulin's place in the history of medicine\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003ch2 style=\"margin-top: 2em;\"\u003eExplore Related Molecules Jewelry\u003c\/h2\u003e\n\u003cul\u003e\n\u003cli\u003e\u003ca href=\"https:\/\/sciencejewelry1824.shop\/products\/insulin-18k-gold-plated\"\u003eInsulin necklace | gold vermeil\u003c\/a\u003e\u003c\/li\u003e\n\u003cli\u003e\u003ca href=\"https:\/\/sciencejewelry1824.shop\/products\/glucose\"\u003eGlucose necklace | silver\u003c\/a\u003e\u003c\/li\u003e\n\u003cli\u003e\u003ca href=\"https:\/\/sciencejewelry1824.shop\/products\/hemoglobin\"\u003eHemoglobin necklace | silver\u003c\/a\u003e\u003c\/li\u003e\n\u003cli\u003e\u003ca href=\"https:\/\/sciencejewelry1824.shop\/products\/adrenaline\"\u003eAdrenaline necklace | silver\u003c\/a\u003e\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003csection class=\"product-faq\"\u003e\n\u003ch2 style=\"margin-top: 2em;\"\u003eFAQ\u003c\/h2\u003e\n\n\u003ch3 style=\"margin-top:1.75em;\"\u003eWill someone with type 1 diabetes feel seen by this piece?\u003c\/h3\u003e\n\u003cp\u003eYes. Insulin is life-sustaining, and for those managing diabetes or researching metabolic disease, wearing the molecule is recognition and celebration. The molecule transforms from something burdensome into something discovered, sequenced, and awarded a Nobel Prize.\u003c\/p\u003e\n\n\u003ch3 style=\"margin-top:1.75em;\"\u003eWhat makes insulin so important scientifically?\u003c\/h3\u003e\n\u003cp\u003eIt was the first protein ever sequenced, a breakthrough that launched molecular biology. Its structure, with two chains linked by disulfide bonds, became the iconic image of peptide architecture. Every biochemistry student learns it. Every researcher in metabolism encounters it. It holds more scientific history than most molecules in the catalog.\u003c\/p\u003e\n\n\u003ch3 style=\"margin-top:1.75em;\"\u003eWhat is the size, material, and chain?\u003c\/h3\u003e\n\u003cp\u003e17 mm pendant in 925 sterling silver, nickel-free and hypoallergenic. 45 cm sterling silver chain with 5 cm extender. Ships free worldwide via DHL Express in 1-5 business days, with all import duties prepaid. Comes in a ready-to-gift jewelry box with the 30-day “Love It or Return It” policy.\u003c\/p\u003e\n\n\u003ch3 style=\"margin-top:1.75em;\"\u003eIs there a gold version?\u003c\/h3\u003e\n\u003cp\u003eYes. Insulin is available in 18k gold vermeil at the same 17 mm size. Both versions work as personal symbols or professional recognition pieces.\u003c\/p\u003e\n\n\u003c\/section\u003e","brand":"sciencejewelry1824","offers":[{"title":"Default Title","offer_id":53499544583,"sku":"NK0184-S","price":160.0,"currency_code":"EUR","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/1411\/4806\/files\/insulin-necklace-silver.png?v=1726932366"},{"product_id":"antibody-earrings","title":"antibody earrings | silver","description":"\u003ch2\u003eantibody earrings | sterling silver\u003c\/h2\u003e\n\u003cp\u003eIf you can generate 100 billion different antibodies from a single B cell through somatic hypermutation and combinatorial rearrangement, you already know why the Y-shaped immunoglobulin is worn by immunologists and cell biologists. Two antibodies, one for each ear, a pair for someone whose work is recognising and binding antigens.\u003c\/p\u003e\n\n\u003ch2 style=\"margin-top: 2em;\"\u003eThe Science Behind the Antibody\u003c\/h2\u003e\n\u003cp\u003eEach antibody is a Y-shaped immunoglobulin built from two heavy chains and two light chains joined by disulfide bonds. The Fab arms bind antigens with exceptional specificity, a product of somatic hypermutation and combinatorial gene rearrangement. A single B cell clone can produce over 100 billion distinct antibody sequences through somatic hypermutation alone, with the hypervariable complementarity-determining regions changing with each iteration. These earrings render that molecular precision in sterling silver, honouring a system that can respond to almost any pathogen.\u003c\/p\u003e\n\n\u003ch2 style=\"margin-top: 2em;\"\u003eThe Audience\u003c\/h2\u003e\n\u003cp\u003eFor anyone who appreciates the elegance of the immune system.\u003c\/p\u003e\n\u003cul\u003e\n\u003cli\u003eimmunologists, cell biologists, and biomedical researchers\u003c\/li\u003e\n\u003cli\u003estudents and academics finishing a science degree\u003c\/li\u003e\n\u003cli\u003ehealthcare professionals who want to carry something from their field\u003c\/li\u003e\n\u003cli\u003eanyone who works with antibodies in the lab or clinic\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003ch2 style=\"margin-top: 2em;\"\u003eExplore Related Immunology Jewelry\u003c\/h2\u003e\n\u003cul\u003e\n\u003cli\u003e\u003ca href=\"https:\/\/sciencejewelry1824.shop\/products\/antibody\"\u003eAntibody necklace in sterling silver\u003c\/a\u003e\u003c\/li\u003e\n\u003cli\u003e\u003ca href=\"https:\/\/sciencejewelry1824.shop\/products\/antibody-studs\"\u003eAntibody studs in sterling silver\u003c\/a\u003e\u003c\/li\u003e\n\u003cli\u003e\u003ca href=\"https:\/\/sciencejewelry1824.shop\/products\/red-blood-cell-studs\"\u003eRed blood cell studs in sterling silver\u003c\/a\u003e\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003csection class=\"product-faq\"\u003e\n\u003ch2 style=\"margin-top: 2em;\"\u003eFAQ\u003c\/h2\u003e\n\n\u003ch3 style=\"margin-top:1.75em;\"\u003eWhat do you wear when your work is immunity?\u003c\/h3\u003e\n\u003cp\u003eAntibody earrings. Y-shaped immunoglobulin structures with hypervariable Fab regions capable of recognising almost any foreign antigen. Any biomedical researcher or immunologist will understand immediately.\u003c\/p\u003e\n\n\u003ch3 style=\"margin-top:1.75em;\"\u003eWhy is somatic hypermutation such a powerful mechanism?\u003c\/h3\u003e\n\u003cp\u003eSomatic hypermutation introduces targeted mutations into antibody genes, generating over 100 billion possible sequences from a single B cell clone. The complementarity-determining regions can change with each iteration, allowing the immune system to generate antibodies with binding affinities that improve over time. This is why your immune response gets stronger against pathogens you have encountered before.\u003c\/p\u003e\n\n\u003ch3 style=\"margin-top:1.75em;\"\u003eWhat are the material and size?\u003c\/h3\u003e\n\u003cp\u003e15 mm sterlig silver leverback hooks, 925 sterling silver, nickel-free and hypoallergenic, high-polish finish. Ships free worldwide via DHL Express in 1-5 business days. Comes in a ready-to-gift jewelry box with all import duties covered and the 30-day “Love It or Return It” policy.\u003c\/p\u003e\n\n\u003ch3 style=\"margin-top:1.75em;\"\u003eCan I exchange if the fit is off?\u003c\/h3\u003e\n\u003cp\u003eYes. All our earrings are covered by a 30-day Love It or Return It policy. If the fit or style do not suit you, we will help you find an alternative or process a return.\u003c\/p\u003e\n\n\u003c\/section\u003e","brand":"sciencejewelry1824","offers":[{"title":"Default Title","offer_id":1784294506503,"sku":"ER0005-S","price":160.0,"currency_code":"EUR","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/1411\/4806\/files\/antibody-earrings-silver-earrings-science-jewelry-sciencejewelry1824-51402631020892.png?v=1699274049"},{"product_id":"crispr","title":"CRISPR necklace | silver","description":"\u003ch2\u003eCRISPR necklace | sterling silver\u003c\/h2\u003e\n\u003cp\u003eIf you teach gene editing or work in a lab that runs CRISPR screens, the discovery story matters more than the marketing. CRISPR did not start as a technology. It started as bacterial immunity, observed in repeats Mojica catalogued in the 1990s and confirmed as adaptive immunity by Horvath and Barrangou in yogurt-fermenting Streptococcus in 2007. The 24 mm sterling silver pendant carries that arc.\u003c\/p\u003e\n\u003ch2 style=\"margin-top: 2em;\"\u003eThe Science Behind CRISPR\u003c\/h2\u003e\n\u003cp\u003eClustered Regularly Interspaced Short Palindromic Repeats are sequence patterns first noted in E. coli by Yoshizumi Ishino in 1987 and systematically catalogued in archaea by Francisco Mojica through the 1990s. The function was unknown until Horvath and Barrangou's 2007 paper showed CRISPR loci in Streptococcus thermophilus actively defended bacteria against bacteriophage infection by capturing viral DNA fragments as memory. The Jinek-Doudna-Charpentier 2012 paper in Science demonstrated that the Cas9 protein, guided by a single RNA, could cleave any matching DNA sequence in vitro. Within months, multiple labs (notably Zhang and Church groups in 2013) had adapted the system to mammalian cells. The 2020 Nobel Prize in Chemistry went to Doudna and Charpentier. Casgevy, the first FDA-approved CRISPR therapy, launched in 2023 for sickle cell disease.\u003c\/p\u003e\n\u003ch2 style=\"margin-top: 2em;\"\u003eA Quiet Symbol For\u003c\/h2\u003e\n\u003cul\u003e\n\u003cli\u003emolecular biologists running CRISPR screens or making knockouts\u003c\/li\u003e\n\u003cli\u003egenome engineers and gene therapy researchers\u003c\/li\u003e\n\u003cli\u003emicrobiologists working on bacterial defence systems\u003c\/li\u003e\n\u003cli\u003egraduates of genetics, molecular biology, or biotech programmes\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp\u003eFor someone who reaches for CRISPR when the conversation is about Mojica's repeats and Streptococcus immunity, not the latest gene-editing startup.\u003c\/p\u003e\n\u003ch2 style=\"margin-top: 2em;\"\u003eExplore Related Genetics Jewelry\u003c\/h2\u003e\n\u003cul\u003e\n\u003cli\u003e\u003ca href=\"https:\/\/sciencejewelry1824.shop\/products\/crispr-18k-gold-plated\"\u003eCRISPR necklace | gold vermeil\u003c\/a\u003e\u003c\/li\u003e\n\u003cli\u003e\u003ca href=\"https:\/\/sciencejewelry1824.shop\/products\/rna\"\u003eRNA necklace | silver\u003c\/a\u003e\u003c\/li\u003e\n\u003cli\u003e\u003ca href=\"https:\/\/sciencejewelry1824.shop\/products\/vertical-shrna\"\u003eshRNA necklace V | silver\u003c\/a\u003e\u003c\/li\u003e\n\u003cli\u003e\u003ca href=\"https:\/\/sciencejewelry1824.shop\/products\/cloning-vector\"\u003eCloning vector necklace | silver\u003c\/a\u003e\u003c\/li\u003e\n\u003cli\u003e\u003ca href=\"https:\/\/sciencejewelry1824.shop\/products\/horizontal-dna\"\u003eDNA necklace H | silver\u003c\/a\u003e\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003csection class=\"product-faq\"\u003e\n\u003ch2 style=\"margin-top:2em;\"\u003eFAQ\u003c\/h2\u003e\n\u003ch3 style=\"margin-top:1.75em;\"\u003eWhy does the bacterial-immunity history matter for a working geneticist?\u003c\/h3\u003e\n\u003cp\u003eBecause the system's clinical utility depends on properties that emerged from millions of years of bacterial evolution: the programmability of guide-RNA targeting, the PAM recognition that prevents self-cutting, the tolerance for various Cas variants from different bacterial species. Cas12a, Cas13, and the base editors and prime editors built on top of CRISPR all trace their structural and mechanistic features back to systems bacteria evolved to defend themselves. The discovery story is also the engineering story.\u003c\/p\u003e\n\u003ch3 style=\"margin-top:1.75em;\"\u003eWhy has CRISPR become so dominant in molecular biology?\u003c\/h3\u003e\n\u003cp\u003eBecause the programmability collapsed the time and cost of gene editing from months to days. Earlier methods (zinc-finger nucleases, TALENs) required engineering a new protein for each target. CRISPR-Cas9 lets the same Cas9 protein hit any genomic locus by changing a 20-nucleotide guide RNA sequence. The tool has scaled across screening (genome-wide CRISPR libraries), in vivo therapy (Casgevy 2023 for sickle cell), and basic research at a pace that few other techniques have matched.\u003c\/p\u003e\n\u003ch3 style=\"margin-top:1.75em;\"\u003eWhat size is the pendant and what chain comes with it?\u003c\/h3\u003e\n\u003cp\u003e925 sterling silver, 24 mm pendant on a 45 cm sterling silver chain with a 5 cm extender. Nickel-free and hypoallergenic. Free worldwide DHL Express in 1-5 business days, with all import duties and taxes covered. 30-day “Love It or Return It” returns.\u003c\/p\u003e\n\u003ch3 style=\"margin-top:1.75em;\"\u003eIs there a gold version?\u003c\/h3\u003e\n\u003cp\u003eYes. The same CRISPR pendant is available in \u003ca href=\"https:\/\/sciencejewelry1824.shop\/products\/crispr-18k-gold-plated\"\u003e18K gold vermeil\u003c\/a\u003e at the same chain length. Silver tends to suit daily lab wear, gold tends to suit graduation, retirement, or a major milestone in genome engineering or gene therapy.\u003c\/p\u003e\n\u003c\/section\u003e\n","brand":"sciencejewelry1824","offers":[{"title":"Default Title","offer_id":7276380061759,"sku":"NK0082-S","price":160.0,"currency_code":"EUR","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/1411\/4806\/files\/crispr-necklace-silver-necklaces-science-jewelry-sciencejewelry1824-51401050980700.png?v=1699256768"},{"product_id":"horizontal-dna-18k-gold-plated","title":"DNA necklace H | gold vermeil","description":"\u003ch2\u003eDNA necklace H | 18k gold vermeil\u003c\/h2\u003e\n\u003cp\u003eThe double helix, in horizontal orientation, in 18k gold vermeil. Both backbones spiral at full width with the major and minor grooves visible. The form that makes the helix easiest to read.\u003c\/p\u003e\n\n\u003ch2 style=\"margin-top:2em;\"\u003eThe Science Behind the DNA Helix\u003c\/h2\u003e\n\u003cp\u003eThe major groove and minor groove are the two channels running along the helix where the backbone strands are farther apart or closer together. The major groove is wide enough for proteins to read the sequence without opening the strands, which is how transcription factors find their target genes and how restriction enzymes locate their cut sites. Some antibiotics work by sliding into the minor groove and disrupting bacterial replication. The horizontal orientation captures both grooves clearly at scale.\u003c\/p\u003e\n\n\u003ch2 style=\"margin-top:2em;\"\u003eThe Audience\u003c\/h2\u003e\n\u003cul\u003e\n\u003cli\u003emolecular biologists, structural biologists, and biophysicists\u003c\/li\u003e\n\u003cli\u003egenetics researchers and biotech professionals\u003c\/li\u003e\n\u003cli\u003ebiology and medical students through their first genetics rotation\u003c\/li\u003e\n\u003cli\u003escience teachers and communicators who draw the helix on a whiteboard for a living\u003c\/li\u003e\n\u003cli\u003eanyone whose work or family history makes the molecule personal\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp\u003eMost often bought by people who already own the silver version and want a more deliberate piece for outside the lab.\u003c\/p\u003e\n\n\u003ch2 style=\"margin-top:2em;\"\u003eExplore Related Genetics Jewelry\u003c\/h2\u003e\n\u003cul\u003e\n\u003cli\u003e\u003ca href=\"https:\/\/sciencejewelry1824.shop\/products\/horizontal-dna\"\u003eDNA necklace H | silver\u003c\/a\u003e\u003c\/li\u003e\n\u003cli\u003e\u003ca href=\"https:\/\/sciencejewelry1824.shop\/products\/dna-18k-gold-plated\"\u003eDNA necklace V | gold vermeil\u003c\/a\u003e\u003c\/li\u003e\n\u003cli\u003e\u003ca href=\"https:\/\/sciencejewelry1824.shop\/products\/dna\"\u003eDNA necklace V | silver\u003c\/a\u003e\u003c\/li\u003e\n\u003cli\u003e\u003ca href=\"https:\/\/sciencejewelry1824.shop\/products\/interlocked-dna-18k-gold-plated\"\u003eInterlocked DNA necklace | gold vermeil\u003c\/a\u003e\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003csection class=\"product-faq\"\u003e\n\u003ch2 style=\"margin-top:2em;\"\u003eFAQ\u003c\/h2\u003e\n\n\u003ch3 style=\"margin-top:1.75em;\"\u003eWhat's the difference between the horizontal and vertical DNA necklaces?\u003c\/h3\u003e\n\u003cp\u003eThe molecule is the same. The orientation isn't. The horizontal version (H) is 30 mm wide and shows both backbones at full extension, with the major and minor grooves spread across the pendant. That's the form most people picture when they see DNA in a textbook. The vertical version (V) is 20 mm tall and shows the helix from end-on, which reads slightly more abstract on a chain. H tends to be the choice when people want the structure to be unmistakable. V tends to be the choice when they want it more discreet.\u003c\/p\u003e\n\n\u003ch3 style=\"margin-top:1.75em;\"\u003eWhy do the major and minor grooves matter?\u003c\/h3\u003e\n\u003cp\u003eThe major groove is wide enough for proteins to read the DNA sequence without unwinding the helix. That's how every transcription factor finds its target gene, how restriction enzymes recognise their cut sites, and how some antibiotics target bacterial replication. The minor groove is narrower and harder for proteins to read directly, but several drugs slide into it and disrupt DNA function from there. The horizontal pendant shows both grooves clearly because the helix sits with its full width visible.\u003c\/p\u003e\n\n\u003ch3 style=\"margin-top:1.75em;\"\u003eWhat size is the pendant and what does it ship with?\u003c\/h3\u003e\n\u003cp\u003eThe pendant is 30 mm wide, sized so both backbones and the grooves between them read clearly. It comes in 18k gold vermeil, a 2.5 micron gold layer over a sterling silver core, nickel-free and hypoallergenic, on a 45 cm gold-plated chain with a 5 cm extender and lobster clasp. Free worldwide DHL Express shipping in 1-5 business days, all import duties covered, in a ready-to-gift jewelry box.\u003c\/p\u003e\n\n\u003ch3 style=\"margin-top:1.75em;\"\u003eWhich DNA necklace is right for me: the horizontal gold, the vertical gold, or one of the silver versions?\u003c\/h3\u003e\n\u003cp\u003eMost people pick by orientation first and material second. If you want the helix unmistakable from across a room, go horizontal. If you want it discreet, go vertical. After that, gold vermeil reads as the more deliberate choice and silver reads as the everyday one. The silver versions are the most-bought by lab researchers. The gold versions tend to be gifts or after-PhD pieces. All four are the same molecule, drawn the same way.\u003c\/p\u003e\n\u003c\/section\u003e","brand":"sciencejewelry1824","offers":[{"title":"Default Title","offer_id":12972716916799,"sku":"NK0096-GV","price":205.0,"currency_code":"EUR","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/1411\/4806\/files\/dna-necklace-h-gold-vermeil.png?v=1727075754"},{"product_id":"mitochondrion-silver-and-18k-gold-plated","title":"mitochondrion necklace | silver \u0026 gold vermeil","description":"\u003ch2\u003emitochondrion necklace | silver \u0026amp; gold vermeil\u003c\/h2\u003e\n\u003cp\u003eA mitochondrion necklace for cell biologists, biochemists, and anyone who has spent time staring at the electron transport chain. The organelle that produces the ATP every cell in your body runs on, rendered with a silver outer membrane and a gold vermeil inner cristae structure.\u003c\/p\u003e\n\n\u003ch2 style=\"margin-top:2em;\"\u003eThe Science Behind the Mitochondrion\u003c\/h2\u003e\n\u003cp\u003eMitochondria are the descendants of an ancient bacterium swallowed by an early eukaryotic cell, an idea Lynn Margulis put forward in 1967 and which is now textbook endosymbiotic theory. They have their own circular DNA, divide on their own schedule, and produce roughly 90% of the cell's ATP through oxidative phosphorylation across the inner membrane. The folded inner membrane (the cristae) is where the electron transport chain runs, and where ATP synthase, the rotary enzyme that spins like a tiny molecular turbine, generates the cell's energy currency. Mitochondrial dysfunction sits at the centre of conditions ranging from Leigh syndrome to Parkinson's disease.\u003c\/p\u003e\n\n\u003ch2 style=\"margin-top:2em;\"\u003eA Meaningful Gift for Science Lovers\u003c\/h2\u003e\n\u003cp\u003eFor people whose work touches cellular energy, metabolism, or the long shadow of endosymbiosis.\u003c\/p\u003e\n\u003cul\u003e\n\u003cli\u003ecell biologists and biochemists\u003c\/li\u003e\n\u003cli\u003emetabolism researchers and clinicians working on mitochondrial disease\u003c\/li\u003e\n\u003cli\u003emedical students who have memorised the Krebs cycle three times\u003c\/li\u003e\n\u003cli\u003eanyone who refers to mitochondria as \"the powerhouse\" with a slight smile\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp\u003eFor the colleague who would prefer their cellular energy in two metals.\u003c\/p\u003e\n\n\u003ch2 style=\"margin-top:2em;\"\u003eExplore Related Cellular Biology Jewelry\u003c\/h2\u003e\n\u003cul\u003e\n\u003cli\u003e\u003ca href=\"https:\/\/sciencejewelry1824.shop\/products\/mitochondrion-18k-gold-plated\"\u003eMitochondrion necklace | gold vermeil\u003c\/a\u003e\u003c\/li\u003e\n\u003cli\u003e\u003ca href=\"https:\/\/sciencejewelry1824.shop\/products\/chloroplast\"\u003eChloroplast necklace | silver\u003c\/a\u003e\u003c\/li\u003e\n\u003cli\u003e\u003ca href=\"https:\/\/sciencejewelry1824.shop\/products\/nuclear-pore\"\u003eNuclear pore necklace | silver\u003c\/a\u003e\u003c\/li\u003e\n\u003cli\u003e\u003ca href=\"https:\/\/sciencejewelry1824.shop\/products\/ribosomes-necklace-gold-vermeil\"\u003eRibosomes necklace | gold vermeil\u003c\/a\u003e\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003csection class=\"product-faq\"\u003e\n\u003ch2 style=\"margin-top:2em;\"\u003eFAQ\u003c\/h2\u003e\n\n\u003ch3 style=\"margin-top:1.75em;\"\u003eWhy two metals on one piece?\u003c\/h3\u003e\n\u003cp\u003eThe mitochondrion has two distinct membranes, and they do different jobs. The silver outer membrane is permeable and structurally simpler. The gold vermeil inner membrane (folded into cristae) is where the electron transport chain and ATP synthase do the actual energy work. The two-metal design carries the same biological logic as the structure itself.\u003c\/p\u003e\n\n\u003ch3 style=\"margin-top:1.75em;\"\u003eIs the cristae geometry biologically accurate?\u003c\/h3\u003e\n\u003cp\u003eThe folded pattern matches what you would see in an electron micrograph: the inner membrane invaginated to maximise surface area, since more cristae mean more room for the respiratory complexes. The shape is stylised for jewelry, but the principle is intact.\u003c\/p\u003e\n\n\u003ch3 style=\"margin-top:1.75em;\"\u003eWhat are the materials and chain details?\u003c\/h3\u003e\n\u003cp\u003eSterling silver outer membrane with an 18K gold vermeil inner structure (sterling silver core with 2.5 micron gold plating). The pendant is 28 mm wide. Comes on a 45 cm sterling silver chain with a 5 cm extender. Ships free worldwide via DHL Express within 1-5 business days, with all import duties and taxes covered.\u003c\/p\u003e\n\n\u003ch3 style=\"margin-top:1.75em;\"\u003eWill the two finishes age at the same rate?\u003c\/h3\u003e\n\u003cp\u003eThe silver portion will develop a faint patina over time, which most people prefer to a brand-new shine. The vermeil holds its colour for years with normal wear. A soft-cloth wipe-down after exposure to perfume or sweat keeps both metals looking right. If the silver darkens more than wanted, a silver polishing cloth restores it without affecting the vermeil.\u003c\/p\u003e\n\u003c\/section\u003e\n","brand":"sciencejewelry1824","offers":[{"title":"Default Title","offer_id":13459242778687,"sku":"NK0227-SGV","price":225.0,"currency_code":"EUR","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/1411\/4806\/files\/mitochondrion_necklace.png?v=1750749845"},{"product_id":"antibody-18k-gold-plated","title":"antibody necklace | gold vermeil","description":"\u003ch2\u003eAntibody necklace | gold vermeil\u003c\/h2\u003e\n\u003cp\u003eThe Y-shape of an immunoglobulin, at 15 mm in 18K gold vermeil. The molecule that recognises every pathogen the immune system has ever met, every monoclonal therapy on the market, and every Western blot ever stained. The pendant is small because the molecule is small. The reach of what it represents is anything but.\u003c\/p\u003e\n\u003ch2 style=\"margin-top: 2em;\"\u003eThe Science Behind the Antibody\u003c\/h2\u003e\n\u003cp\u003eAntibodies are Y-shaped proteins built from two heavy chains and two light chains, joined by disulfide bonds. The two arms of the Y are the variable regions, generated by V(D)J recombination during B-cell development to produce a repertoire of roughly 10^11 different binding specificities. The stem of the Y is the constant region, which determines the antibody's class (IgG, IgM, IgA, IgE, IgD) and its effector function. Therapeutic antibodies, from rituximab to pembrolizumab, exploit this same architecture: a tailored variable region binds the disease-relevant target, and the constant region recruits immune effectors. Monoclonal antibodies are now among the highest-revenue drug classes in pharmaceutical history.\u003c\/p\u003e\n\u003ch2 style=\"margin-top: 2em;\"\u003eWorn By\u003c\/h2\u003e\n\u003cp\u003eImmunologists, oncologists, and people who work with antibodies as both research tools and therapeutics.\u003c\/p\u003e\n\u003cul\u003e\n\u003cli\u003eimmunologists and B-cell biologists\u003c\/li\u003e\n\u003cli\u003emedical oncologists prescribing monoclonal therapies\u003c\/li\u003e\n\u003cli\u003ebiotech and pharmaceutical scientists in antibody discovery\u003c\/li\u003e\n\u003cli\u003eclinical lab staff who run flow cytometry or immunoassays daily\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp\u003eThe gold vermeil version tends to be chosen as a milestone object: a defended PhD on antibody engineering, a clinical board pass in oncology, or a long-career marker.\u003c\/p\u003e\n\u003ch2 style=\"margin-top: 2em;\"\u003eExplore Related Cellular Biology Jewelry\u003c\/h2\u003e\n\u003cul\u003e\n\u003cli\u003e\u003ca href=\"https:\/\/sciencejewelry1824.shop\/products\/antibody\"\u003eAntibody necklace | silver\u003c\/a\u003e\u003c\/li\u003e\n\u003cli\u003e\u003ca href=\"https:\/\/sciencejewelry1824.shop\/products\/antibody-1\"\u003eAntibody bracelet | silver\u003c\/a\u003e\u003c\/li\u003e\n\u003cli\u003e\u003ca href=\"https:\/\/sciencejewelry1824.shop\/products\/antibody-studs\"\u003eAntibody studs | silver\u003c\/a\u003e\u003c\/li\u003e\n\u003cli\u003e\u003ca href=\"https:\/\/sciencejewelry1824.shop\/products\/igm\"\u003eIgM necklace | silver\u003c\/a\u003e\u003c\/li\u003e\n\u003cli\u003e\u003ca href=\"https:\/\/sciencejewelry1824.shop\/products\/insulin-18k-gold-plated\"\u003eInsulin necklace | gold vermeil\u003c\/a\u003e\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch2 style=\"margin-top: 2em;\"\u003eFrequently Asked Questions\u003c\/h2\u003e\n\u003ch3 style=\"margin-top:1.75em;\"\u003eWhat does the pendant show?\u003c\/h3\u003e\n\u003cp\u003eAn immunoglobulin in its classic Y-shape: two heavy chains plus two light chains, with the variable binding regions at the tips of the Y and the constant region at the stem. The geometry is standard textbook orientation, simplified for jewelry scale.\u003c\/p\u003e\n\u003ch3 style=\"margin-top:1.75em;\"\u003eWhy an antibody rather than a specific Ig class?\u003c\/h3\u003e\n\u003cp\u003eBecause the Y-shape is shared across IgG, IgM, IgA, IgE, and IgD. The pendant reads as the canonical antibody, the architecture rather than a specific isotype. The catalog includes a separate IgM necklace and an antibody bracelet for people who want a more specific reference.\u003c\/p\u003e\n\u003ch3 style=\"margin-top:1.75em;\"\u003eWhat are the specs and what is the return policy?\u003c\/h3\u003e\n\u003cp\u003e18K gold vermeil with sterling silver core and 2.5 micron gold plating, 15 mm pendant, 45 cm chain with a 5 cm extender. Nickel-free and hypoallergenic. Ships free worldwide via DHL Express in 1-5 business days, with all import duties and taxes covered. 30-day “Love It or Return It” returns.\u003c\/p\u003e\n\u003ch3 style=\"margin-top:1.75em;\"\u003eIs this also available in silver?\u003c\/h3\u003e\n\u003cp\u003eYes. The same 15 mm antibody pendant is available in 925 sterling silver at the same size and chain length.\u003c\/p\u003e\n","brand":"sciencejewelry1824","offers":[{"title":"Default Title","offer_id":13815773495359,"sku":"NK0016-GV","price":155.0,"currency_code":"EUR","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/1411\/4806\/files\/antibody-necklace-gold-vermeil-necklaces-science-jewelry-sciencejewelry1824-51379824066908.png?v=1699023314"},{"product_id":"mix-n-match-cytosine-guanine","title":"cytosine - guanine earrings | silver","description":"\u003ch2\u003eCytosine-guanine earrings | sterling silver\u003c\/h2\u003e\n\u003cp\u003eCytosine on one ear, guanine on the other. The stronger of the two Watson-Crick pairs, three hydrogen bonds rather than two. The base pair that holds the double helix together when AT-rich regions have already separated. Worn the same way the bases sit across the helix, paired but on opposite sides.\u003c\/p\u003e\n\u003ch2 style=\"margin-top: 2em;\"\u003eThe Science Behind the C-G Pair\u003c\/h2\u003e\n\u003cp\u003eCytosine and guanine pair through three hydrogen bonds in the Watson-Crick geometry, one more than the A-T pair. The thermodynamic consequence is that GC-rich DNA sequences melt at higher temperatures, which is one of the first things any molecular biologist learns to factor in when designing PCR primers or interpreting denaturation curves. Beyond simple stability, cytosine-guanine dinucleotides (CpG sites) are the targets of DNA methylation, the primary epigenetic modification in mammals. The combination of structural strength and chemical modifiability is what makes the G-C pair carry both the physical scaffold of the genome and a layer of regulatory information on top.\u003c\/p\u003e\n\u003ch2 style=\"margin-top: 2em;\"\u003eA Quiet Symbol For\u003c\/h2\u003e\n\u003cul\u003e\n\u003cli\u003emolecular biologists and epigenetics researchers\u003c\/li\u003e\n\u003cli\u003ebiochemists studying nucleic acid structure or DNA repair\u003c\/li\u003e\n\u003cli\u003escience educators\u003c\/li\u003e\n\u003cli\u003eanyone who wants the strong base pair as a paired earring set\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp\u003eOften paired with the adenine-thymine earrings to cover all four DNA bases, two pairs across two ear pairs.\u003c\/p\u003e\n\u003ch2 style=\"margin-top: 2em;\"\u003eExplore Related Molecules Jewelry\u003c\/h2\u003e\n\u003cul\u003e\n\u003cli\u003e\u003ca href=\"https:\/\/sciencejewelry1824.shop\/products\/cytosine\"\u003eCytosine necklace | silver\u003c\/a\u003e\u003c\/li\u003e\n\u003cli\u003e\u003ca href=\"https:\/\/sciencejewelry1824.shop\/products\/guanine\"\u003eGuanine necklace | silver\u003c\/a\u003e\u003c\/li\u003e\n\u003cli\u003e\u003ca href=\"https:\/\/sciencejewelry1824.shop\/products\/mix-n-match-adenine-thymine\"\u003eAdenine-thymine earrings | silver\u003c\/a\u003e\u003c\/li\u003e\n\u003cli\u003e\u003ca href=\"https:\/\/sciencejewelry1824.shop\/products\/cytosine-guanine\"\u003eCytosine-guanine necklace | silver\u003c\/a\u003e\u003c\/li\u003e\n\u003cli\u003e\u003ca href=\"https:\/\/sciencejewelry1824.shop\/products\/cytosine-guanine-18k-gold-plated\"\u003eCytosine-guanine necklace | gold vermeil\u003c\/a\u003e\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003csection class=\"product-faq\"\u003e\n\u003ch2 style=\"margin-top:2em;\"\u003eFAQ\u003c\/h2\u003e\n\u003ch3 style=\"margin-top:1.75em;\"\u003eAre these for working scientists or for science fans?\u003c\/h3\u003e\n\u003cp\u003eBoth, but the audience leans towards working scientists. Molecular biologists, geneticists, and epigenetics researchers tend to read the C-G pair as a quiet reference to the topology and chemistry of the DNA helix. Science educators wear them for the same reason. The earrings still work for science fans, especially anyone who can name the four bases and tell you which pair forms three hydrogen bonds and which forms two.\u003c\/p\u003e\n\u003ch3 style=\"margin-top:1.75em;\"\u003eWhy pair cytosine and guanine rather than picking one base?\u003c\/h3\u003e\n\u003cp\u003eBecause the pair is the unit of meaning in DNA. A single base on its own is half of a coded letter. The pair is the letter. Wearing one base on each ear references the way the two strands of DNA come together: each base on one strand is hydrogen-bonded to its complement on the other. The earrings carry that geometry, and the C-G pair specifically is the stronger of the two.\u003c\/p\u003e\n\u003ch3 style=\"margin-top:1.75em;\"\u003eWhat size are the earrings and what is the return policy?\u003c\/h3\u003e\n\u003cp\u003e925 sterling silver. Each pendant is 13 mm, suspended from a 17.5 mm sterling silver hoop. Nickel-free and hypoallergenic, no chain. Ships free worldwide via DHL Express in 1-5 business days, with all import duties and taxes covered. 30-day “Love It or Return It” returns.\u003c\/p\u003e\n\u003ch3 style=\"margin-top:1.75em;\"\u003eAre there matching earrings for the adenine-thymine pair?\u003c\/h3\u003e\n\u003cp\u003eYes. The adenine-thymine earrings exist as a parallel set, also in sterling silver, with 12 mm pendants on the same 17.5 mm hoops. Buyers building both DNA base pairs as a paired collection usually pick up both sets at once.\u003c\/p\u003e\n\u003c\/section\u003e","brand":"sciencejewelry1824","offers":[{"title":"Default Title","offer_id":15197643046975,"sku":"ER0015-S","price":160.0,"currency_code":"EUR","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/1411\/4806\/files\/031_cytosineguanineearrings.png?v=1709035363"},{"product_id":"crossed-dna-ring","title":"crossed DNA ring | silver","description":"\u003ch2\u003ecrossed DNA ring | sterling silver\u003c\/h2\u003e\n\u003cp\u003eThe crossed DNA ring marks the moment two DNA strands physically meet and exchange material. In meiosis, this is called homologous recombination, the molecular event that shuffles parental genomes and produces the genetic diversity every species depends on. Worn as a ring, it sits as a quiet reference to that crossover moment.\u003c\/p\u003e\n\n\u003ch2 style=\"margin-top: 2em;\"\u003eThe Science Behind Crossed DNA\u003c\/h2\u003e\n\u003cp\u003eWhen chromosomes recombine during meiosis, DNA strands from two parents physically exchange genetic material, forming a four-way junction called a Holliday junction (proposed 1964, visualized by X-ray crystallography in the 1990s). The strands are cut and resealed in new combinations, producing recombined chromosomes carrying DNA from both parents. This is the primary mechanism generating genetic diversity in sexually reproducing organisms. Every egg and sperm carries chromosomes that are recombinants, combinations that did not exist in either parent. The crossed geometry of this ring depicts that moment of physical contact and exchange, the mechanism by which each generation becomes genetically unique.\u003c\/p\u003e\n\n\u003ch2 style=\"margin-top: 2em;\"\u003eWorn By\u003c\/h2\u003e\n\u003cul\u003e\n\u003cli\u003egeneticists and recombination researchers\u003c\/li\u003e\n\u003cli\u003emolecular biologists and CRISPR specialists\u003c\/li\u003e\n\u003cli\u003egenetics students and biochemistry researchers\u003c\/li\u003e\n\u003cli\u003eanyone who understands DNA as the language of inheritance\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003ch2 style=\"margin-top: 2em;\"\u003eExplore Related Genetics Jewelry\u003c\/h2\u003e\n\u003cul\u003e\n\u003cli\u003e\u003ca href=\"https:\/\/sciencejewelry1824.shop\/products\/dna-9k-solid-gold\"\u003eDNA ring | 9K solid gold\u003c\/a\u003e\u003c\/li\u003e\n\u003cli\u003e\u003ca href=\"https:\/\/sciencejewelry1824.shop\/products\/interlocked-dna\"\u003eInterlocked DNA necklace | silver\u003c\/a\u003e\u003c\/li\u003e\n\u003cli\u003e\u003ca href=\"https:\/\/sciencejewelry1824.shop\/products\/silver-dna\"\u003eDNA necklace | silver\u003c\/a\u003e\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003csection class=\"product-faq\"\u003e\n\u003ch2 style=\"margin-top: 2em;\"\u003eFAQ\u003c\/h2\u003e\n\n\u003ch3 style=\"margin-top:1.75em;\"\u003eWhat makes the crossed DNA ring different from a regular DNA ring?\u003c\/h3\u003e\n\u003cp\u003eThe crossed design depicts the moment of recombination, when two DNA molecules physically intersect and exchange genetic material. A regular DNA ring shows the double helix structure. The crossed ring shows the geometric moment of genetic exchange.\u003c\/p\u003e\n\n\u003ch3 style=\"margin-top:1.75em;\"\u003eWhy is recombination important?\u003c\/h3\u003e\n\u003cp\u003eRecombination creates genetic diversity. Without it, offspring would be clones of their parents. With it, each egg and sperm carries a unique combination of DNA from both parents. This is why siblings are similar but not identical, and why populations evolve. Recombination is also the target of CRISPR and other gene editing tools.\u003c\/p\u003e\n\n\u003ch3 style=\"margin-top:1.75em;\"\u003eWhat sizes are available?\u003c\/h3\u003e\n\u003cp\u003eUS ring sizes 5, 6, 7, 8, and 8.5. 925 polished sterling silver, nickel-free and hypoallergenic. High-polish finish. Each size comes in a ready-to-gift, eco-friendly jewelry box with the 30-day “Love It or Return It” policy. Free worldwide DHL Express shipping (1-5 business days).\u003c\/p\u003e\n\n\u003ch3 style=\"margin-top:1.75em;\"\u003eHow do I choose the right ring size?\u003c\/h3\u003e\n\u003cp\u003eMeasure an existing ring that fits comfortably, or use a ring-sizing guide. If you are between sizes, we recommend sizing down slightly for a snug fit. Sterling silver is forgiving and can be resized if needed, but proper fit from the start ensures the best wear experience.\u003c\/p\u003e\n\n\u003c\/section\u003e","brand":"sciencejewelry1824","offers":[{"title":"5","offer_id":56545506197890,"sku":"RG0004-S-5","price":160.0,"currency_code":"EUR","in_stock":true},{"title":"6","offer_id":56548233576834,"sku":"RG0004-S-6","price":160.0,"currency_code":"EUR","in_stock":true},{"title":"7","offer_id":56548233609602,"sku":"RG0004-S-7","price":160.0,"currency_code":"EUR","in_stock":true},{"title":"8","offer_id":56548233642370,"sku":"RG0004-S-8","price":160.0,"currency_code":"EUR","in_stock":true},{"title":"8.5","offer_id":56548233675138,"sku":"RG0004-S-85","price":160.0,"currency_code":"EUR","in_stock":true},{"title":"9","offer_id":56548233707906,"sku":"RG0004-S-9","price":160.0,"currency_code":"EUR","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/1411\/4806\/files\/29_DNA_crossed_silver.png?v=1705324192"},{"product_id":"coronavirus","title":"coronavirus necklace | silver","description":"\u003ch2\u003eCoronavirus necklace | sterling silver\u003c\/h2\u003e\n\u003cp\u003eFive years ago, almost no one outside of virology used the term RBD or knew what cryo-EM could resolve in three weeks. Then a coronavirus cycled from genome sequence to global vaccine to variant tracker in real time, with biology, medicine, and public health watching every step. This piece marks that period in scientific history.\u003c\/p\u003e\n\n\u003ch2 style=\"margin-top: 2em;\"\u003eThe Science of the Coronavirus\u003c\/h2\u003e\n\u003cp\u003eCoronaviruses are enveloped, positive-sense single-stranded RNA viruses with genomes of 26-32 kilobases, among the largest in the RNA virus world. The viral envelope is studded with spike (S) proteins that bind host receptors to initiate infection, along with membrane (M), envelope (E), and nucleocapsid (N) proteins. SARS-CoV-2 uses the spike protein to bind ACE2 receptors on respiratory epithelial cells. The spike protein is trimeric, approximately 1,200 amino acids per monomer, with a receptor-binding domain at its tip. The crown-like cluster of spike trimers on the virion surface gives the family its name: corona, Latin for crown. The spike protein became the primary target of COVID-19 vaccines.\u003c\/p\u003e\n\n\u003ch2 style=\"margin-top: 2em;\"\u003eA Meaningful Gift for Science Lovers\u003c\/h2\u003e\n\u003cul\u003e\n\u003cli\u003evirologists, immunologists, and infectious disease researchers\u003c\/li\u003e\n\u003cli\u003evaccine developers and structural biologists who worked on spike protein\u003c\/li\u003e\n\u003cli\u003eepidemiologists who track pandemic diseases\u003c\/li\u003e\n\u003cli\u003escientists who want to carry a reminder of the last years' discoveries\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003ch2 style=\"margin-top: 2em;\"\u003eExplore Related Cellular Biology Jewelry\u003c\/h2\u003e\n\u003cul\u003e\n\u003cli\u003e\u003ca href=\"https:\/\/sciencejewelry1824.shop\/products\/coronavirus-18k-gold-plated\"\u003eCoronavirus necklace | gold vermeil\u003c\/a\u003e\u003c\/li\u003e\n\u003cli\u003e\u003ca href=\"https:\/\/sciencejewelry1824.shop\/products\/bacteriophage-18k-gold-plated\"\u003eBacteriophage necklace | gold vermeil\u003c\/a\u003e\u003c\/li\u003e\n\u003cli\u003e\u003ca href=\"https:\/\/sciencejewelry1824.shop\/products\/west-nile-virus\"\u003eWest Nile virus necklace | silver\u003c\/a\u003e\u003c\/li\u003e\n\u003cli\u003e\u003ca href=\"https:\/\/sciencejewelry1824.shop\/products\/ebola-virus\"\u003eEbola virus necklace | silver\u003c\/a\u003e\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003csection class=\"product-faq\"\u003e\n\u003ch2 style=\"margin-top: 2em;\"\u003eFAQ\u003c\/h2\u003e\n\n\u003ch3 style=\"margin-top:1.75em;\"\u003eIs this appropriate for someone who worked through the pandemic?\u003c\/h3\u003e\n\u003cp\u003eYes. Virologists, vaccine developers, and infectious disease researchers who worked on SARS-CoV-2 will recognise the spike protein immediately. The piece is a scientific achievement, not a reminder of hardship.\u003c\/p\u003e\n\n\u003ch3 style=\"margin-top:1.75em;\"\u003eWhy is the spike protein so important structurally?\u003c\/h3\u003e\n\u003cp\u003eBecause it is what the virus uses to attach to and enter human cells. Understanding its structure (via cryo-electron microscopy) led directly to vaccine design. Scientists worldwide worked to map it, and every vaccine developed targets it. The spike protein is the key that opened the door to pandemic control.\u003c\/p\u003e\n\n\u003ch3 style=\"margin-top:1.75em;\"\u003eWhat is the size, material, and chain?\u003c\/h3\u003e\n\u003cp\u003e16 mm pendant in 925 sterling silver, nickel-free and hypoallergenic. 45 cm sterling silver chain with 5 cm extender. Ships free worldwide via DHL Express in 1-5 business days, with all import duties prepaid. Comes in a ready-to-gift jewelry box with the 30-day “Love It or Return It” policy.\u003c\/p\u003e\n\n\u003ch3 style=\"margin-top:1.75em;\"\u003eIs there a gold version?\u003c\/h3\u003e\n\u003cp\u003eYes. Coronavirus is available in 18k gold vermeil at the same 16 mm size. Both versions work as personal recognition pieces or gifts for colleagues in virology and immunology.\u003c\/p\u003e\n\n\u003c\/section\u003e","brand":"sciencejewelry1824","offers":[{"title":"Default Title","offer_id":31999476990015,"sku":"NK0078-S","price":190.0,"currency_code":"EUR","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/1411\/4806\/files\/coronavirus-necklace-silver-necklaces-science-jewelry-sciencejewelry1824-51400562704732.png?v=1699250110"},{"product_id":"rna","title":"RNA necklace | silver","description":"\u003ch2\u003eRNA necklace | sterling silver\u003c\/h2\u003e\n\u003cp\u003eThe decade-long shift from \"RNA is the messenger between DNA and protein\" to \"RNA is also the regulator, the catalyst, and the therapeutic\" has rewritten how molecular biologists frame the central dogma. Worn here as a 24 mm sterling silver pendant of a single-stranded ribose-phosphate backbone, the molecule that mediates and now therapeutically targets gene expression.\u003c\/p\u003e\n\u003ch2 style=\"margin-top: 2em;\"\u003eThe Science Behind RNA\u003c\/h2\u003e\n\u003cp\u003eRNA differs from DNA in two structural details with outsized functional consequences: ribose has a 2'-hydroxyl group where deoxyribose does not, making RNA reactive enough to fold into catalytic conformations and labile enough to turn over rapidly. Uracil replaces thymine, with the same base-pairing properties but cheaper biosynthesis. RNA's role expanded enormously over the last twenty-five years. The classical mRNA-tRNA-rRNA trio gave way to a wider catalogue: micro-RNAs that fine-tune gene expression at the post-transcriptional level, long non-coding RNAs that scaffold chromatin and nuclear architecture, small nuclear RNAs in the spliceosome, guide RNAs in CRISPR systems, and the synthetic mRNA that drove the first widely-deployed mRNA vaccines in 2020-2021. RNA has gone from intermediate to active participant in gene regulation and therapeutic delivery.\u003c\/p\u003e\n\u003ch2 style=\"margin-top: 2em;\"\u003eWho Tends to Wear This\u003c\/h2\u003e\n\u003cul\u003e\n\u003cli\u003eRNA biologists, ribozyme researchers, and structural biologists working on RNA folds\u003c\/li\u003e\n\u003cli\u003emolecular biologists working on splicing, non-coding RNA, or RNAi\u003c\/li\u003e\n\u003cli\u003evaccine developers and mRNA therapeutics scientists\u003c\/li\u003e\n\u003cli\u003ebiology educators teaching the central dogma at any level\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp\u003eFor someone who knows the difference between mRNA, tRNA, miRNA, and lncRNA at sight, and prefers wearing the molecule rather than the buzzword.\u003c\/p\u003e\n\u003ch2 style=\"margin-top: 2em;\"\u003eExplore Related Genetics Jewelry\u003c\/h2\u003e\n\u003cul\u003e\n\u003cli\u003e\u003ca href=\"https:\/\/sciencejewelry1824.shop\/products\/rna-cufflinks\"\u003eRNA cufflinks | silver\u003c\/a\u003e\u003c\/li\u003e\n\u003cli\u003e\u003ca href=\"https:\/\/sciencejewelry1824.shop\/products\/horizontal-dna\"\u003eDNA necklace H | silver\u003c\/a\u003e\u003c\/li\u003e\n\u003cli\u003e\u003ca href=\"https:\/\/sciencejewelry1824.shop\/products\/crispr\"\u003eCRISPR necklace | silver\u003c\/a\u003e\u003c\/li\u003e\n\u003cli\u003e\u003ca href=\"https:\/\/sciencejewelry1824.shop\/products\/vertical-shrna\"\u003eshRNA necklace V | silver\u003c\/a\u003e\u003c\/li\u003e\n\u003cli\u003e\u003ca href=\"https:\/\/sciencejewelry1824.shop\/products\/cloning-vector\"\u003eCloning vector necklace | silver\u003c\/a\u003e\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003csection class=\"product-faq\"\u003e\n\u003ch2 style=\"margin-top:2em;\"\u003eFAQ\u003c\/h2\u003e\n\u003ch3 style=\"margin-top:1.75em;\"\u003eWhy an RNA pendant rather than the more iconic DNA helix?\u003c\/h3\u003e\n\u003cp\u003eBecause RNA biology is the working domain for a meaningful slice of molecular biologists, and DNA does not represent that work directly. Splicing, non-coding RNA, RNAi, mRNA vaccines, and CRISPR guides are all RNA stories at the bench level. Buyers picking the RNA pendant over the DNA helix are usually signalling which side of the central dogma their daily work sits on. Both pendants exist for a reason. The choice is between the icon (DNA) and the working object of the wearer (RNA).\u003c\/p\u003e\n\u003ch3 style=\"margin-top:1.75em;\"\u003eWhy has RNA become so central to therapeutics in the last decade?\u003c\/h3\u003e\n\u003cp\u003eBecause the chemistry of synthesising and stabilising RNA improved at the same time as the delivery technology (lipid nanoparticles) matured. Modified nucleotides like pseudouridine reduce RNA's intrinsic immunogenicity and improve protein expression, which is what made mRNA vaccines clinically viable. The same delivery and chemistry advances now drive ongoing RNA therapeutics for genetic diseases, cancer, and rare disorders. RNA went from too unstable for most clinical uses to the basis of two of the most-used vaccines in human history within roughly fifteen years.\u003c\/p\u003e\n\u003ch3 style=\"margin-top:1.75em;\"\u003eWhat size is the pendant and what chain comes with it?\u003c\/h3\u003e\n\u003cp\u003e925 sterling silver, 24 mm pendant on a 45 cm sterling silver chain with a 5 cm extender. Nickel-free and hypoallergenic. Free worldwide DHL Express in 1-5 business days, with all import duties and taxes covered. 30-day “Love It or Return It” returns.\u003c\/p\u003e\n\u003ch3 style=\"margin-top:1.75em;\"\u003eAre there other formats of the RNA design?\u003c\/h3\u003e\n\u003cp\u003eYes. The same RNA structure is available as \u003ca href=\"https:\/\/sciencejewelry1824.shop\/products\/rna-cufflinks\"\u003esterling silver cufflinks\u003c\/a\u003e for someone who occasionally wears a suit and wants the molecule on the cuff. The pendant and cufflinks sometimes go together as a set for a graduation gift to a working RNA biologist.\u003c\/p\u003e\n\u003c\/section\u003e\n","brand":"sciencejewelry1824","offers":[{"title":"Default Title","offer_id":33171348750399,"sku":"NK0303-S","price":170.0,"currency_code":"EUR","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/1411\/4806\/files\/rna-necklace-silver-necklaces-science-jewelry-sciencejewelry1824-51400506573148.png?v=1699249388"},{"product_id":"interlocked-dna-18k-gold-plated","title":"interlocked DNA necklace | gold vermeil","description":"\u003ch2\u003eInterlocked DNA necklace | gold vermeil\u003c\/h2\u003e\n\u003cp\u003eThe same 36 mm interlocked-helix structure, rendered in 18K gold vermeil. Two DNA molecules threaded through one another, holding the geometry of a process that cells solve and re-solve through every division. Worn most often by people who have spent enough time with DNA to know the helix is rarely on its own.\u003c\/p\u003e\n\u003ch2 style=\"margin-top: 2em;\"\u003eThe Science Behind Interlocked DNA\u003c\/h2\u003e\n\u003cp\u003eTwo DNA duplexes can become physically linked during recombination, where four-stranded intermediates known as Holliday junctions form between homologous chromosomes. Robin Holliday inferred their existence in 1964 from genetic data in fungi, and electron microscopy confirmed the structure in the 1970s. Resolution of these junctions, by enzymes such as RuvC in bacteria or GEN1 in mammalian cells, is what shuffles genetic material between maternal and paternal chromosomes during meiosis. Without this routine interlocking and resolution, recombination would not work, and the genetic diversity that drives evolution and underpins immunity would not exist.\u003c\/p\u003e\n\u003ch2 style=\"margin-top: 2em;\"\u003eA Quiet Symbol For\u003c\/h2\u003e\n\u003cp\u003eResearchers and clinicians whose work touches DNA repair, recombination, or chromosome biology.\u003c\/p\u003e\n\u003cul\u003e\n\u003cli\u003egeneticists and molecular biologists working on recombination or DNA repair\u003c\/li\u003e\n\u003cli\u003emedical oncologists and radiation oncologists familiar with DNA-damage response\u003c\/li\u003e\n\u003cli\u003ecell biologists who study mitosis, meiosis, or chromosome dynamics\u003c\/li\u003e\n\u003cli\u003estructural biologists who think about DNA as a three-dimensional object\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp\u003eBuyers split into two groups: scientists who want the recombination geometry on their lapel for a conference, and gift-givers marking a defended thesis or a first-author paper.\u003c\/p\u003e\n\u003ch2 style=\"margin-top: 2em;\"\u003eExplore Related Genetics Jewelry\u003c\/h2\u003e\n\u003cul\u003e\n\u003cli\u003e\u003ca href=\"https:\/\/sciencejewelry1824.shop\/products\/interlocked-dna\"\u003eInterlocked DNA necklace | silver\u003c\/a\u003e\u003c\/li\u003e\n\u003cli\u003e\u003ca href=\"https:\/\/sciencejewelry1824.shop\/products\/dna-18k-gold-plated\"\u003eDNA necklace V | gold vermeil\u003c\/a\u003e\u003c\/li\u003e\n\u003cli\u003e\u003ca href=\"https:\/\/sciencejewelry1824.shop\/products\/crossed-dna-ring\"\u003eCrossed DNA ring | silver\u003c\/a\u003e\u003c\/li\u003e\n\u003cli\u003e\u003ca href=\"https:\/\/sciencejewelry1824.shop\/products\/circular-dna-18k-gold-plated\"\u003eCircular DNA necklace | gold vermeil\u003c\/a\u003e\u003c\/li\u003e\n\u003cli\u003e\u003ca href=\"https:\/\/sciencejewelry1824.shop\/products\/dna-earrings\"\u003eDNA earrings | silver\u003c\/a\u003e\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch2 style=\"margin-top: 2em;\"\u003eFrequently Asked Questions\u003c\/h2\u003e\n\u003ch3 style=\"margin-top:1.75em;\"\u003eWhat does the interlocked geometry represent?\u003c\/h3\u003e\n\u003cp\u003eTwo DNA molecules in physical contact. That state arises during recombination, where homologous chromosomes exchange segments through Holliday junctions, and after replication, where daughter chromosomes are catenated until topoisomerase enzymes unlink them.\u003c\/p\u003e\n\u003ch3 style=\"margin-top:1.75em;\"\u003eIs this the same molecule as the standard DNA necklace?\u003c\/h3\u003e\n\u003cp\u003eThe base structure is the same double helix, but the geometry is different. A single DNA pendant shows the molecule. The interlocked version shows two molecules in the act of interacting.\u003c\/p\u003e\n\u003ch3 style=\"margin-top:1.75em;\"\u003eWhat are the specs and what is the return policy?\u003c\/h3\u003e\n\u003cp\u003e18K gold vermeil with sterling silver core and 2.5 micron gold plating, 36 mm pendant, 45 cm chain with a 5 cm extender. Nickel-free and hypoallergenic. Ships free worldwide via DHL Express in 1-5 business days, with all import duties and taxes covered. 30-day “Love It or Return It” returns.\u003c\/p\u003e\n\u003ch3 style=\"margin-top:1.75em;\"\u003eIs this also available in silver?\u003c\/h3\u003e\n\u003cp\u003eYes. The same 36 mm interlocked DNA pendant is available in 925 sterling silver at the same size and chain length.\u003c\/p\u003e\n","brand":"sciencejewelry1824","offers":[{"title":"Default Title","offer_id":40454287130801,"sku":"NK0187-GV","price":180.0,"currency_code":"EUR","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/1411\/4806\/files\/interlocked_DNA_necklace_in_gold_vermeil.png?v=1730105045"},{"product_id":"dna-earrings-gold-vermeil","title":"DNA earrings | gold vermeil","description":"\u003ch2\u003eDNA earrings | 18k gold vermeil\u003c\/h2\u003e\n\u003cp\u003eThe double helix worn as a daily pair. Paired earrings for a researcher who carries DNA structure with them every day. 20 mm, small enough to be subtle at a microscope, specific enough that a biologist across the room will recognize it.\u003c\/p\u003e\n\n\u003ch2 style=\"margin-top: 2em;\"\u003eThe Science Behind the Double Helix\u003c\/h2\u003e\n\u003cp\u003eThe structure of DNA was published in April 1953 by Watson and Crick in a one-page Nature paper, built on X-ray crystallography data produced by Rosalind Franklin and Raymond Gosling. The helix completes one full turn every 3.4 nanometres, with 10 base pairs per turn and a diameter of about 2 nanometres. What the structure immediately implied (and Watson and Crick noted with deliberate understatement) was a copying mechanism: \"It has not escaped our notice that the specific pairing we have postulated immediately suggests a possible copying mechanism for the genetic material.\" Watson and Crick shared the Nobel Prize in Physiology or Medicine in 1962, along with Wilkins.\u003c\/p\u003e\n\n\u003ch2 style=\"margin-top: 2em;\"\u003eA Meaningful Gift for Science Lovers\u003c\/h2\u003e\n\u003cul\u003e\n\u003cli\u003emolecular biologists and geneticists\u003c\/li\u003e\n\u003cli\u003ebiochemists and structural biologists\u003c\/li\u003e\n\u003cli\u003ebiology students and science educators\u003c\/li\u003e\n\u003cli\u003eanyone who prefers their jewelry to have content\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp\u003eThe most recognized structure in biology, in a size that does not need to announce itself.\u003c\/p\u003e\n\n\u003ch2 style=\"margin-top: 2em;\"\u003eExplore Related Genetics Jewelry\u003c\/h2\u003e\n\u003cul\u003e\n\u003cli\u003e\u003ca href=\"https:\/\/sciencejewelry1824.shop\/products\/dna-earrings\"\u003eDNA Earrings | silver\u003c\/a\u003e\u003c\/li\u003e\n\u003cli\u003e\u003ca href=\"https:\/\/sciencejewelry1824.shop\/products\/dna-earring-hoops-s-gold-vermeil\"\u003eDNA Earring Hoops S | gold vermeil\u003c\/a\u003e\u003c\/li\u003e\n\u003cli\u003e\u003ca href=\"https:\/\/sciencejewelry1824.shop\/products\/crossed-dna-ring\"\u003eDNA Ring | silver\u003c\/a\u003e\u003c\/li\u003e\n\u003cli\u003e\u003ca href=\"https:\/\/sciencejewelry1824.shop\/products\/crispr\"\u003eCRISPR Necklace | silver\u003c\/a\u003e\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003csection class=\"product-faq\"\u003e\n\u003ch2 style=\"margin-top: 2em;\"\u003eFAQ\u003c\/h2\u003e\n\n\u003ch3 style=\"margin-top:1.75em;\"\u003eWho appreciates DNA earrings as a gift?\u003c\/h3\u003e\n\u003cp\u003eAnyone working in genetics, molecular biology, or bioinformatics recognizes the double helix instantly. They work equally well for someone who studied biology and still carries that love of DNA structure into their career.\u003c\/p\u003e\n\n\u003ch3 style=\"margin-top:1.75em;\"\u003eWhat makes DNA structure so visually distinctive?\u003c\/h3\u003e\n\u003cp\u003eThe anti-parallel strands and the major and minor grooves create an unmistakable silhouette. Watson and Crick's insight was not just the pairing rules, but how that pairing spirals into a shape you can hold, and now, wear.\u003c\/p\u003e\n\n\u003ch3 style=\"margin-top:1.75em;\"\u003eWhat are the size, material, and earring type?\u003c\/h3\u003e\n\u003cp\u003e20 mm earrings in 18k gold vermeil (sterling silver core with 2.5 micron gold plating). Nickel-free and hypoallergenic. Come with leverback hooks. Ships free worldwide via DHL Express in 1-5 business days. Comes in a ready-to-gift jewelry box with the 30-day “Love It or Return It” policy.\u003c\/p\u003e\n\n\u003ch3 style=\"margin-top:1.75em;\"\u003eIs there a silver version?\u003c\/h3\u003e\n\u003cp\u003eYes. DNA earrings are available in sterling silver at the same 20 mm size. Both versions come with leverback hooks.\u003c\/p\u003e\n\n\u003c\/section\u003e","brand":"sciencejewelry1824","offers":[{"title":"Default Title","offer_id":55328089014658,"sku":"ER0022-GV","price":235.0,"currency_code":"EUR","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/1411\/4806\/files\/DNA_earrings_vermeil.png?v=1750835941"}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/1411\/4806\/collections\/03-biologists.png?v=1781771666","url":"https:\/\/sciencejewelry1824.shop\/collections\/gifts-for-biologists.oembed","provider":"sciencejewelry1824","version":"1.0","type":"link"}