T lymphocyte

noun
Updated on: 15 Nov 2017

Definition of T lymphocyte

:any of several lymphocytes (such 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 of cell-mediated and humoral immunity (as by the regulation of T and B cell maturation and proliferation) and others that lyse antigen-bearing cells :t cell
  • T lymphocytes differentiate in the thymus and interact directly with other cells to regulate the immune response or to kill cells expressing the appropriate antigen.
  • —Alan F. Williams
  • Activation of a T lymphocyte requires occupancy of its antigen-specific cell surface receptor … by its appropriate ligand (processed antigen presented by class I or class II MHC molecules) and a second signal from a growth factor.
  • —Suryaprakash R. Sambhara et al.
— compare b lymphocyte

Origin and Etymology of t lymphocyte

thymus-derived


Medical Dictionary

T lymphocyte

noun \ ˈtē- \

medical Definition of T lymphocyte


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