T cell

Definitions of T cell
1

n a small lymphocyte developed in the thymus; it orchestrates the immune system's response to infected or malignant cells

Synonyms:
T lymphocyte
Types:
CD4 T cell, CD4 cell, helper T cell, helper 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 T cell, CD8 cell, cytotoxic T cell, killer T cell, killer 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
Type of:
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

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