title: Studies of IgG subclasses in ataxia-telangiectasia patients.
mesh_terms: D000293:Adolescent; D000328:Adult; D000375:Aging; D000917:Antibody Formation; D001260:Ataxia Telangiectasia / Q000276:immunology*; D002648:Child; D002675:Child, Preschool; D006801:Humans; D007074:Immunoglobulin G / Q000032:analysis / Q000145:classification*; D007223:Infant
chemical_list: D007074:Immunoglobulin G