Tumor immunity.
D000375:Aging; D000818:Animals; D000917:Antibody Formation; D003602:Cytotoxicity, Immunologic; D007111:Immunity, Cellular; D007165:Immunosuppression Therapy; D051379:Mice; D008814:Mice, Inbred NZB / Q000276:immunology; D009374:Neoplasms, Experimental / Q000276:immunology*