Increased susceptibility to infection associated with abnormalities of complement-mediated functions and of the third component of complement (C3).
D000328:Adult; D000906:Antibodies / Q000032:analysis; D000917:Antibody Formation; D001770:Blood Bactericidal Activity; D002633:Chemotaxis; D003165:Complement System Proteins / Q000032:analysis* / Q000378:metabolism; D006386:Hemagglutination Tests; D006461:Hemolysis; D006801:Humans; D006968:Hypersensitivity, Delayed; D007122:Immunoelectrophoresis; D007153:Immunologic Deficiency Syndromes / Q000150:complications*; D066298:In Vitro Techniques; D007239:Infections / Q000209:etiology*; D007713:Klinefelter Syndrome / Q000150:complications; D007962:Leukocytes / Q000187:drug effects / Q000276:immunology; D008297:Male; D010587:Phagocytosis; D005719:gamma-Globulins / Q000032:analysis
D000906:Antibodies; D005719:gamma-Globulins; D003165:Complement System Proteins