title: Clinical significance of IgG subclass deficiency.
mesh_terms: D002648:Child; D004406:Dysgammaglobulinemia / Q000150:complications* / Q000276:immunology; D005260:Female; D006801:Humans; D017099:IgG Deficiency; D007074:Immunoglobulin G / Q000145:classification; D008297:Male
chemical_list: D007074:Immunoglobulin G