title: Children with selective IgG subclass deficiency and recurrent sinopulmonary infection: impaired response to bacterial capsular polysaccharide antigens.
mesh_terms: D000917:Antibody Formation; D002648:Child; D004406:Dysgammaglobulinemia / Q000150:complications / Q000276:immunology*; D006801:Humans; D017099:IgG Deficiency; D007074:Immunoglobulin G / Q000032:analysis / Q000145:classification; D007075:Immunoglobulin M / Q000032:analysis; D011135:Polysaccharides, Bacterial / Q000276:immunology*; D012008:Recurrence; D012141:Respiratory Tract Infections / Q000150:complications / Q000276:immunology*
chemical_list: D007074:Immunoglobulin G; D007075:Immunoglobulin M; D011135:Polysaccharides, Bacterial