title: Active and inactive states of immunologic unresponsiveness.
mesh_terms: D000367:Age Factors; D000818:Animals; D000831:Animals, Newborn; D001402:B-Lymphocytes / Q000276:immunology; D002417:Cattle / Q000276:immunology; D005620:Freund's Adjuvant; D007106:Immune Sera; D007108:Immune Tolerance / Q000187:drug effects*; D007117:Immunization, Secondary; D007457:Iodine Radioisotopes; D007553:Isotope Labeling; D051379:Mice; D008807:Mice, Inbred BALB C; D009113:Muramidase / Q000494:pharmacology; D012710:Serum Albumin, Bovine; D013386:Succinates; D013601:T-Lymphocytes / Q000276:immunology
chemical_list: D007106:Immune Sera; D007457:Iodine Radioisotopes; D013386:Succinates; D012710:Serum Albumin, Bovine; D005620:Freund's Adjuvant; D009113:Muramidase