title: Selective antibody deficiency and recurrent pneumococcal bacteremia in a patient with Sjögren's syndrome, hyperimmunoglobulinemia G, and deficiencies of IgG2 and IgG4.
mesh_terms: D000907:Antibodies, Bacterial / Q000032:analysis; D005260:Female; D006801:Humans; D006942:Hypergammaglobulinemia / Q000150:complications*; D017099:IgG Deficiency; D007074:Immunoglobulin G / Q000032:analysis*; D007153:Immunologic Deficiency Syndromes / Q000150:complications*; D008875:Middle Aged; D011008:Pneumococcal Infections / Q000209:etiology* / Q000276:immunology; D011135:Polysaccharides, Bacterial / Q000276:immunology; D018805:Sepsis / Q000209:etiology* / Q000276:immunology; D012859:Sjogren's Syndrome / Q000150:complications*; D013296:Streptococcus pneumoniae / Q000276:immunology
chemical_list: D000907:Antibodies, Bacterial; D007074:Immunoglobulin G; D011135:Polysaccharides, Bacterial