Regulatory mechanisms in the immune response.
D000906:Antibodies; D000917:Antibody Formation; D000941:Antigens; D000961:Antilymphocyte Serum; D001402:B-Lymphocytes / Q000276:immunology; D005796:Genes; D006241:Haptens; D006649:Histocompatibility Antigens; D008264:Macrophages / Q000276:immunology; D011828:Radiation Chimera; D013601:T-Lymphocytes / Q000276:immunology; D013950:Thymus Gland / Q000276:immunology
D000906:Antibodies; D000941:Antigens; D000961:Antilymphocyte Serum; D006241:Haptens; D006649:Histocompatibility Antigens