T lymphocyte

noun

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

First Known Use of T lymphocyte

1972, in the meaning defined above

History and Etymology for T lymphocyte

thymus-derived

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The first known use of T lymphocyte was in 1972

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T lymphocyte

TLZ

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Cite this Entry

“T lymphocyte.” Merriam-Webster.com Dictionary, Merriam-Webster, https://www.merriam-webster.com/dictionary/T%20lymphocyte. Accessed 2 Aug. 2021.

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More Definitions for T lymphocyte

T lymphocyte

noun
\ ˈtē- How to pronounce T lymphocyte (audio) \

Medical Definition of T lymphocyte

: t cell

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