title: Self-tolerance maintained by active suppressor mechanisms.
mesh_terms: D000818:Animals; D000917:Antibody Formation / Q000187:drug effects; D000918:Antibody Specificity; D000937:Antigen-Antibody Reactions; D000941:Antigens; D001323:Autoantibodies; D001324:Autoantigens; D001402:B-Lymphocytes / Q000276:immunology; D001963:Bromelains / Q000494:pharmacology; D004912:Erythrocytes / Q000187:drug effects / Q000276:immunology; D007108:Immune Tolerance; D007165:Immunosuppression Therapy; D051379:Mice; D013601:T-Lymphocytes / Q000276:immunology
chemical_list: D000941:Antigens; D001323:Autoantibodies; D001324:Autoantigens; D001963:Bromelains