[Immunoglubulins and chronic rheumatoid arthritis].
D000818:Animals; D001172:Arthritis, Rheumatoid / Q000276:immunology*; D002908:Chronic Disease; D006386:Hemagglutination Tests; D006801:Humans; D012217:Rheumatoid Factor / Q000032:analysis*; D014461:Ultracentrifugation; D005719:gamma-Globulins / Q000032:analysis*
D005719:gamma-Globulins; D012217:Rheumatoid Factor