lymphocyte-mediated cytotoxicity

lym·pho·cyte-·me·di·at·ed cy·to·tox·ic·i·ty

the toxic or lytic activity of lymphocytes; cytotoxic T lymphocytes may cause lysis of cells by production of cytolytic proteins such as perforin. Natural killer cells are cytotoxic without earlier sensitization.
See also: antibody-dependent cell-mediated cytotoxicity.