T cell


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Related to T cell: killer T cell, T helper cell, T cell lymphoma, T cell receptor

T cell

n.
Any of a class of lymphocytes, including the helper T cells and cytotoxic T lymphocytes, that form in bone marrow and mature in the thymus. T cells are activated when receptors on the cell surface recognize specific antigens. Also called T lymphocyte.

[t(hymus-derived) cell.]

T cell



n.
any of several closely related lymphocytes, developed in the thymus, that circulate in the blood and lymph and regulate the immune system's response to infected or malignant cells. Also called T lymphocyte.
[1965–70; T(hymus-derived)]

T cell

Any of the lymphocytes that act to defend the body against disease by binding foreign antigens to receptors on the surface of their cells. T cells also regulate the function of B cells.
ThesaurusAntonymsRelated WordsSynonymsLegend:
Noun1.T cell - a small lymphocyte developed in the thymus; it orchestrates the immune system's response to infected or malignant cells
lymph cell, lymphocyte - an agranulocytic leukocyte that normally makes up a quarter of the white blood cell count but increases in the presence of infection
CD4 cell, CD4 T cell, helper cell, helper T cell - 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
CD8 cell, CD8 T cell, cytotoxic T cell, killer cell, killer T cell - T cell with CD8 receptor that recognizes antigens on the surface of a virus-infected cell and binds to the infected cell and kill it