Hemagglutinating antipenicillin antibodies (HAPA). Incidence and significance in four groups of patients.
D000743:Anemia, Hemolytic / Q000209:etiology; D000906:Antibodies; D000941:Antigens; D001172:Arthritis, Rheumatoid / Q000276:immunology; D002318:Cardiovascular Diseases / Q000276:immunology; D006386:Hemagglutination Tests; D006801:Humans; D006967:Hypersensitivity; D008180:Lupus Erythematosus, Systemic / Q000276:immunology; D010406:Penicillins / Q000009:adverse effects; D013587:Syphilis / Q000188:drug therapy
D000906:Antibodies; D000941:Antigens; D010406:Penicillins