title: Carcinoembryonic antigen in rheumatoid arthritis.
mesh_terms: D000328:Adult; D000368:Aged; D001172:Arthritis, Rheumatoid / Q000097:blood / Q000276:immunology*; D002272:Carcinoembryonic Antigen / Q000302:isolation & purification*; D003429:Cross Reactions; D006801:Humans; D007075:Immunoglobulin M / Q000302:isolation & purification; D008875:Middle Aged; D011863:Radioimmunoassay; D013167:Spondylitis, Ankylosing / Q000097:blood / Q000276:immunology; D013582:Synovial Fluid / Q000276:immunology
chemical_list: D002272:Carcinoembryonic Antigen; D007075:Immunoglobulin M