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T cell |
Also found in: Medical, Acronyms, Wikipedia, Hutchinson | 0.03 sec. |
T cellWith the B cell, one of the two main types of white blood cell, essential parts of the immune system. T cells originate in the bone marrow, mature in the thymus, and travel in the blood to other lymphoid tissues, such as the spleen, tonsils, and lymph nodes. Through receptor molecules on their surfaces, T cells directly attack invaders (antigens) by binding to them and helping remove them from the body. Because the body contains millions of T and B cells, many of which carry unique receptors, it can respond to virtually any antigen. See also antibody, immunology. T cell [′tē ‚sel] (immunology) One of a heterogeneous population of thymus-derived lymphocytes which participates in the immune responses. Also known as T lymphocyte. How to thank TFD for its existence? Tell a friend about us, add a link to this page, add the site to iGoogle, or visit webmaster's page for free fun content. |
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In the all-out attack, killer T cells commonly damage a lot of harmless territory, which is why virus infections make us feel horrible. Sidestepping antibodies and focusing on killer T cells seemed like a practical alternative, Letvin says. Weiner's laboratory tested and compared levels of antibodies and killer T cells produced in mice by the synDNA(TM) smallpox vaccine to a traditional plasmid DNA vaccine. |
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