title: Isolated IgG deficiency: clinical, immunologic, and pathologic investigations.
mesh_terms: D002675:Child, Preschool; D006801:Humans; D017099:IgG Deficiency; D007070:Immunoglobulin A / Q000032:analysis; D007075:Immunoglobulin M / Q000032:analysis; D008297:Male
chemical_list: D007070:Immunoglobulin A; D007075:Immunoglobulin M