title: Selective IgG2 deficiency in a patient with skin and upper respiratory tract infection.
mesh_terms: D000361:Agammaglobulinemia / Q000276:immunology*; D001402:B-Lymphocytes / Q000166:cytology; D002675:Child, Preschool; D006801:Humans; D017099:IgG Deficiency; D007111:Immunity, Cellular; D007070:Immunoglobulin A / Q000032:analysis; D007126:Immunoglobulin Allotypes / Q000032:analysis; D007073:Immunoglobulin E / Q000032:analysis; D007074:Immunoglobulin G / Q000145:classification; D007075:Immunoglobulin M / Q000032:analysis; D008297:Male; D011863:Radioimmunoassay; D012016:Reference Values; D012141:Respiratory Tract Infections / Q000276:immunology*; D012872:Skin Diseases, Vesiculobullous / Q000276:immunology*
chemical_list: D007070:Immunoglobulin A; D007126:Immunoglobulin Allotypes; D007074:Immunoglobulin G; D007075:Immunoglobulin M; D007073:Immunoglobulin E