Cytotoxicity, Immunologic

**Definition:** The phenomenon of target cell destruction by immunologically active effector cells. It may be brought about directly by sensitized T-lymphocytes or by lymphoid or myeloid killer cells, or it may be mediated by cytotoxic antibody, cytotoxic factor released by lymphoid cells, or complement.

**Tree numbers:** - G12.287

**Synonyms:** - Immunologic Cytotoxicity