title: Low serum levels of IgG- and IgM-rheumatoid factors in patients with idiopathic membranous nephropathy.
mesh_terms: D000328:Adult; D000368:Aged; D005260:Female; D005921:Glomerulonephritis / Q000097:blood / Q000276:immunology* / Q000652:urine; D006801:Humans; D007074:Immunoglobulin G / Q000032:analysis*; D007075:Immunoglobulin M / Q000032:analysis*; D008297:Male; D008875:Middle Aged; D012217:Rheumatoid Factor / Q000032:analysis*
chemical_list: D007074:Immunoglobulin G; D007075:Immunoglobulin M; D012217:Rheumatoid Factor