title: In vivo activity of a nonspecific T cell-replacing factor.
abstract: Nonspecific T cell-replacing factors prepared as supernatants from mixed lymphocyte cultures or concanavalin A-stimulated spleen cells are active in vivo iv injected into nude mice at least 3 days before antigen. The supernatants appear to act by enhancing the week IgM responses that occur in untreated nudes. Secondary responses and IgG antibody were not found.
mesh_terms: D000818:Animals; D003208:Concanavalin A / Q000494:pharmacology; D004306:Dose-Response Relationship, Immunologic; D006388:Hemagglutinins; D007959:Lymphocyte Culture Test, Mixed; D008623:Mercaptoethanol / Q000494:pharmacology; D051379:Mice; D008807:Mice, Inbred BALB C; D008809:Mice, Inbred C3H; D008810:Mice, Inbred C57BL; D008819:Mice, Nude; D012756:Sheep; D013154:Spleen / Q000276:immunology; D013601:T-Lymphocytes / Q000276:immunology*
chemical_list: D006388:Hemagglutinins; D003208:Concanavalin A; D008623:Mercaptoethanol