A type of lymphocyte derived from bone marrow stem cells that matures into an immunologically competent cell under the influence of the thymus. T-cells are involved in a variety of cell-mediated immune reactions.

Microbiology. . 2009.

Look at other dictionaries:

  • T cell — T cells belong to a group of white blood cells known as lymphocytes, and play a central role in cell mediated immunity. They can be distinguished from other lymphocyte types, such as B cells and natural killer cells by the presence of a special… …   Wikipedia

  • T cell — (t[=e] s[e^]l ) [From Thymus, the site of maturation of T cells.] A type of white blood cell that circulates in the blood and lymph, and provides cell mediated immunity for the organism, protecting against infecting cells or the body s own… …   The Collaborative International Dictionary of English

  • T-cell — Tˈ cell noun A type of lymphocyte involved in cellular immunity that matures (in mammals) in the thymus gland, eg a cytotoxic T cell able to kill virus infected cells • • • Main Entry: ↑T * * * T cell, or T cell «TEE SEHL», noun. a type of… …   Useful english dictionary

  • T cell — [ˈti: sel] n British English medical [Date: 1900 2000; Origin: T from thymus derived] a type of ↑white blood cell that helps the body fight disease …   Dictionary of contemporary English

  • T-cell — T cells N COUNT A T cell is a type of white blood cell …   English dictionary

  • T cell — n. [< t(hymus)] any of the lymphocytes that are affected by the thymus and are involved in rejecting foreign tissue, regulating cellular immunity, and controlling the production of antibodies in the presence of an antigen: cf. B CELL …   English World dictionary

  • T cell — [ ti sel ] noun count a type of white blood cell that helps the body fight disease …   Usage of the words and phrases in modern English

  • t cell — 1970; so called because they are derived from the THYMUS (Cf. thymus) …   Etymology dictionary

  • T cell — noun a small lymphocyte developed in the thymus; it orchestrates the immune system s response to infected or malignant cells • Syn: ↑T lymphocyte • Hypernyms: ↑lymphocyte, ↑lymph cell • Hyponyms: ↑helper T cell, ↑ …   Useful english dictionary

  • T cell — A type of white blood cell that is of crucial importance to the immune system. Immature T cells (termed T stem cells) migrate to the thymus gland in the neck, where they mature and differentiate into various types of mature T cells and become… …   Medical dictionary

  • T cell — noun Etymology: thymus derived cell Date: 1970 any of several lymphocytes (as a helper T cell) that differentiate in the thymus, possess highly specific cell surface antigen receptors, and include some that control the initiation or suppression… …   New Collegiate Dictionary

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