title: Immunoglobulin G subclasses in patients with immunodeficiencies.
mesh_terms: D004406:Dysgammaglobulinemia / Q000150:complications / Q000276:immunology*; D006801:Humans; D017099:IgG Deficiency; D007074:Immunoglobulin G / Q000032:analysis / Q000145:classification; D012141:Respiratory Tract Infections / Q000209:etiology / Q000276:immunology
chemical_list: D007074:Immunoglobulin G