helper T cell

helper T cell
help·er T cell .hel-pər-'tē- n a T cell that participates in an immune response by recognizing a foreign antigen and secreting lymphokines to activate T cell and B cell proliferation, that usu. carries CD4 molecular markers on its cell surface, and that is reduced to 20 percent or less of normal numbers in AIDS called also helper cell, helper lymphocyte, helper T lymphocyte compare CYTOTOXIC T CELL, SUPPRESSOR T CELL

Medical dictionary. 2011.

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  • helper T cell — n. a type of T cell that helps coordinate the immune response, especially by activating B cells: the AIDS virus targets and destroys these T cells …   English World dictionary

  • helper T cell — noun T cell with CD4 receptor that recognizes antigens on the surface of a virus infected cell and secretes lymphokines that stimulate B cells and killer T cells; helper T cells are infected and killed by the AIDS virus • Syn: ↑helper cell, ↑CD4… …   Useful english dictionary

  • helper T cell — noun Date: 1974 a T cell that participates in an immune response by recognizing a foreign antigen and secreting lymphokines to activate T cell and B cell proliferation and that usually carries CD4 molecular markers on its cell surface called also …   New Collegiate Dictionary

  • helper T cell — Immunol. a T cell that stimulates B cells to produce antibody against a foreign substance, using lymphokines or direct contact as a signal. Also called T helper cell. * * * …   Universalium

  • helper T-cell — a type of T lymphocyte that plays a key role in cell mediated immunity by recognizing foreign antigen on the surface of antigen presenting cells (see APC) when this is associated with the individual s MHC antigens, having been processed by… …   Medical dictionary

  • helper T-cell — a type of T lymphocyte that plays a key role in cell mediated immunity by recognizing foreign antigen on the surface of antigen presenting cells (see APC) when this is associated with the individual s MHC antigens, having been processed by… …   The new mediacal dictionary

  • helper T cell — See: helper cell …   Glossary of Biotechnology

  • helper T cell — A type of white blood cell that helps stimulate immune system reactions. Helper T cells help activate cytotoxic T cells and macrophages by secreting cytokines. They also stimulate B cells to make antibodies …   English dictionary of cancer terms

  • helper T-cell — See T helper cells …   Dictionary of molecular biology

  • helper T cell — n. imu any of a group of T cells that activate the immune system either by enhancing the production of antibody and other T cells or by mobilizing macrophages to engulf invading particles …   From formal English to slang

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