title: Cytotoxicity of bovine lymphocytes after treatment with lymphokines.
abstract: Cytotoxic lymphocytes were generated from bovine peripheral blood mononuclear leukocytes after in vitro stimulation with lymphokines that contained interleukin-2. Lymphokine-stimulated cultures were cytotoxic to K562 cells (human natural killer [NK] targets) and YAC-1 cells (mouse NK targets), but not to HSB-2 cells (human NK targets) in a 4-hour, 51Cr-release assay. Cells generated after lymphokine activation also mediated antibody-dependent cellular cytotoxicity to HSB-2 cells. Appearance of effector cells as a function of time in culture, method of stimulation, and cold target competition experiments strongly indicated that direct cytotoxicity and antibody-dependent cellular cytotoxicity may have been mediated by the same cell. Cells generated by similar conditions were able to mediate cytotoxicity against infectious bovine rhinotracheitis virus-infected target cells, especially in an 18-hour assay.
mesh_terms: D000818:Animals; D002417:Cattle; D002460:Cell Line; D002860:Chromium Radioisotopes; D003602:Cytotoxicity, Immunologic / Q000187:drug effects*; D006801:Humans; D007376:Interleukin-2 / Q000032:analysis; D007700:Kinetics; D007951:Leukemia, Myeloid; D008214:Lymphocytes / Q000187:drug effects / Q000276:immunology*; D008222:Lymphokines / Q000494:pharmacology*; D008223:Lymphoma; D051379:Mice; D013997:Time Factors
chemical_list: D002860:Chromium Radioisotopes; D007376:Interleukin-2; D008222:Lymphokines