helper T cell
nounDefinition 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
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More Definitions for helper T cell
helper T cell
noun
help·er T cell
| \ ˌhel-pər-ˈtē-
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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