CD3 is a protein complex and T cell co-receptor that is involved in activating both the cytotoxic T cell and T helper cells. It is composed of four distinct chains. In mammals, the complex contains a CD3γ chain, a CD3δ chain, and two CD3ε chains. These chains associate with the T-cell receptor (TCR) and the CD3-zeta (ζ-chain) to generate an activation signal in T lymphocytes. The TCR, CD3-zeta, and the other CD3 molecules together constitute the TCR complex.
"}{"fact":"According to a Gallup poll, most American pet owners obtain their cats by adopting strays.","length":90}
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{"fact":"Cats are subject to gum disease and to dental caries. They should have their teeth cleaned by the vet or the cat dentist once a year.","length":133}
{"slip": { "id": 178, "advice": "It always seems impossible, until it's done."}}
{"type":"standard","title":"Spires of Naples","displaytitle":"Spires of Naples","namespace":{"id":0,"text":""},"wikibase_item":"Q7577817","titles":{"canonical":"Spires_of_Naples","normalized":"Spires of Naples","display":"Spires of Naples"},"pageid":7884430,"thumbnail":{"source":"https://upload.wikimedia.org/wikipedia/commons/thumb/1/13/Obelisco_di_san_Domenico_%28Napoli%292.JPG/330px-Obelisco_di_san_Domenico_%28Napoli%292.JPG","width":320,"height":427},"originalimage":{"source":"https://upload.wikimedia.org/wikipedia/commons/1/13/Obelisco_di_san_Domenico_%28Napoli%292.JPG","width":3240,"height":4320},"lang":"en","dir":"ltr","revision":"1173434127","tid":"2ed12ca5-4985-11ee-8e9d-22a97a239ded","timestamp":"2023-09-02T11:38:06Z","description":"Monumental Columns in Naples, Italy","description_source":"local","content_urls":{"desktop":{"page":"https://en.wikipedia.org/wiki/Spires_of_Naples","revisions":"https://en.wikipedia.org/wiki/Spires_of_Naples?action=history","edit":"https://en.wikipedia.org/wiki/Spires_of_Naples?action=edit","talk":"https://en.wikipedia.org/wiki/Talk:Spires_of_Naples"},"mobile":{"page":"https://en.m.wikipedia.org/wiki/Spires_of_Naples","revisions":"https://en.m.wikipedia.org/wiki/Special:History/Spires_of_Naples","edit":"https://en.m.wikipedia.org/wiki/Spires_of_Naples?action=edit","talk":"https://en.m.wikipedia.org/wiki/Talk:Spires_of_Naples"}},"extract":"The Spires of Naples are monumental columns in the historic center of the city of Naples, Italy.","extract_html":"
The Spires of Naples are monumental columns in the historic center of the city of Naples, Italy.
"}{"type":"standard","title":"Front Page Sports Football Pro","displaytitle":"Front Page Sports Football Pro","namespace":{"id":0,"text":""},"wikibase_item":"Q55612125","titles":{"canonical":"Front_Page_Sports_Football_Pro","normalized":"Front Page Sports Football Pro","display":"Front Page Sports Football Pro"},"pageid":57115294,"thumbnail":{"source":"https://upload.wikimedia.org/wikipedia/en/7/71/FPSFootballpro.jpg","width":198,"height":250},"originalimage":{"source":"https://upload.wikimedia.org/wikipedia/en/7/71/FPSFootballpro.jpg","width":198,"height":250},"lang":"en","dir":"ltr","revision":"1250218573","tid":"cd04db76-85f2-11ef-b003-01c6c9d4ef8d","timestamp":"2024-10-09T03:58:54Z","description":"1993 video game","description_source":"local","content_urls":{"desktop":{"page":"https://en.wikipedia.org/wiki/Front_Page_Sports_Football_Pro","revisions":"https://en.wikipedia.org/wiki/Front_Page_Sports_Football_Pro?action=history","edit":"https://en.wikipedia.org/wiki/Front_Page_Sports_Football_Pro?action=edit","talk":"https://en.wikipedia.org/wiki/Talk:Front_Page_Sports_Football_Pro"},"mobile":{"page":"https://en.m.wikipedia.org/wiki/Front_Page_Sports_Football_Pro","revisions":"https://en.m.wikipedia.org/wiki/Special:History/Front_Page_Sports_Football_Pro","edit":"https://en.m.wikipedia.org/wiki/Front_Page_Sports_Football_Pro?action=edit","talk":"https://en.m.wikipedia.org/wiki/Talk:Front_Page_Sports_Football_Pro"}},"extract":"Front Page Sports Football Pro is a DOS video game developed and published by Dynamix and released in 1993, and is part of the Front Page Sports Football video game series.","extract_html":"
Front Page Sports Football Pro is a DOS video game developed and published by Dynamix and released in 1993, and is part of the Front Page Sports Football video game series.
"}