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helper T cell

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

1974

helper T cell

noun help·er T cell \ˌhel-pər-ˈtē-\   (Medical Dictionary)

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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