title: A comparative family study of rheumatoid arthritis and systemic lupus erythematosus.
mesh_terms: D000293:Adolescent; D000328:Adult; D001741:Black or African American; D001172:Arthritis, Rheumatoid / Q000235:genetics*; D001797:Blood Protein Electrophoresis; D002648:Child; D003298:Coombs Test; D005260:Female; D006801:Humans; D007592:Joint Diseases / Q000453:epidemiology; D008180:Lupus Erythematosus, Systemic / Q000235:genetics*; D008297:Male; D008875:Middle Aged; D009518:New York; D010003:Osteoarthritis / Q000453:epidemiology; D012213:Rheumatic Fever / Q000453:epidemiology; D012217:Rheumatoid Factor; D013588:Syphilis Serodiagnosis; D044465:White People; D005719:gamma-Globulins / Q000378:metabolism
chemical_list: D005719:gamma-Globulins; D012217:Rheumatoid Factor