| umls-concept:C0039194 | skos:definition | CSP: lymphocytes responsible for cell-mediated immunity, formed when lymphocytes circulate through the thymus gland and differentiate to thymocytes; when exposed to an antigen, they divide rapidly and produce large numbers of new T cells sensitized to that antigen.,MSH: Lymphocytes responsible for cell-mediated immunity. Two types have been identified - cytotoxic (T-LYMPHOCYTES, CYTOTOXIC) and helper T-lymphocytes (T-LYMPHOCYTES, HELPER-INDUCER). They are formed when lymphocytes circulate through the THYMUS GLAND and differentiate to thymocytes. When exposed to an antigen, they divide rapidly and produce large numbers of new T cells sensitized to that antigen.,NCI: A type of immune cell that can attack foreign cells, cancer cells, and cells infected with a virus. T lymphocytes can also help control immune responses. A T lymphocyte is a type of white blood cell.,NCI: A thymocyte-derived lymphocyte of immunological importance that is long-lived (months to years) and is responsible for cell-mediated immunity. T | lld:umls |
