title: Regulation of the immune response by IgM antibody: a paradoxical suppression of the in vitro primary immune response to sheep erythrocytes by passive IgM.
mesh_terms: D000818:Animals; D000917:Antibody Formation; D000918:Antibody Specificity; D000941:Antigens; D000942:Antigens, Bacterial; D046508:Culture Techniques; D004140:Dinitrophenols; D004912:Erythrocytes / Q000276:immunology*; D005407:Flagella / Q000276:immunology; D006386:Hemagglutination Tests; D006462:Hemolytic Plaque Technique; D007074:Immunoglobulin G / Q000494:pharmacology; D007075:Immunoglobulin M / Q000494:pharmacology*; D007165:Immunosuppression Therapy; D051379:Mice / Q000276:immunology; D008808:Mice, Inbred CBA; D010527:Perissodactyla / Q000276:immunology; D012475:Salmonella / Q000276:immunology; D012756:Sheep / Q000276:immunology; D013154:Spleen / Q000276:immunology*
chemical_list: D000941:Antigens; D000942:Antigens, Bacterial; D004140:Dinitrophenols; D007074:Immunoglobulin G; D007075:Immunoglobulin M