Selective IgA deficiency in connective-tissue diseases.
D000361:Agammaglobulinemia / Q000150:complications*; D001171:Arthritis, Juvenile / Q000276:immunology; D001172:Arthritis, Rheumatoid / Q000276:immunology; D003095:Collagen Diseases / Q000150:complications* / Q000276:immunology; D006801:Humans; D007074:Immunoglobulin G / Q000032:analysis; D007075:Immunoglobulin M / Q000032:analysis; D008180:Lupus Erythematosus, Systemic / Q000276:immunology
D007074:Immunoglobulin G; D007075:Immunoglobulin M