title: Rheumatoid factors and the etiology of rheumatoid arthritis.
mesh_terms: D001172:Arthritis, Rheumatoid / Q000209:etiology* / Q000276:immunology*; D005826:Genetics, Medical; D006386:Hemagglutination Tests; D006801:Humans; D007075:Immunoglobulin M; D066298:In Vitro Techniques; D007518:Isoantibodies; D012204:Rh-Hr Blood-Group System; D012217:Rheumatoid Factor
chemical_list: D007075:Immunoglobulin M; D007518:Isoantibodies; D012204:Rh-Hr Blood-Group System; D012217:Rheumatoid Factor