title: Sheep-cell agglutination test in non-rheumatoid black patients.
mesh_terms: D000372:Agglutination Tests; D001172:Arthritis, Rheumatoid / Q000175:diagnosis; D044383:Black People; D006801:Humans; D008722:Methods; D012217:Rheumatoid Factor / Q000032:analysis*; D013019:South Africa
chemical_list: D012217:Rheumatoid Factor