title: Serum immunoglobulin status in rheumatoid arthritis.
mesh_terms: D000328:Adult; D001172:Arthritis, Rheumatoid / Q000276:immunology*; D005260:Female; D006801:Humans; D007074:Immunoglobulin G / Q000032:analysis*; D007075:Immunoglobulin M / Q000032:analysis*; D008297:Male; D008875:Middle Aged
chemical_list: D007074:Immunoglobulin G; D007075:Immunoglobulin M