helper T cell

noun

Definition of helper T cell

: 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 helper cell, T-helper cell

First Known Use of helper T cell

1972, in the meaning defined above

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The first known use of helper T cell was in 1972

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Cite this Entry

“Helper T cell.” The Merriam-Webster.com Dictionary, Merriam-Webster Inc., https://www.merriam-webster.com/dictionary/helper%20T%20cell. Accessed 18 January 2020.

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helper T cell

noun
help·​er T cell | \ ˌhel-pər-ˈtē- How to pronounce helper T cell (audio) \

Medical Definition of helper T cell

: 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 usually 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

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