IgA deficiency: family studies.
D000293:Adolescent; D000328:Adult; D001171:Arthritis, Juvenile / Q000276:immunology*; D005260:Female; D006801:Humans; D007109:Immunity; D007074:Immunoglobulin G; D007075:Immunoglobulin M; D007153:Immunologic Deficiency Syndromes / Q000235:genetics; D008297:Male; D010375:Pedigree; D005719:gamma-Globulins
D007074:Immunoglobulin G; D007075:Immunoglobulin M; D005719:gamma-Globulins