On the presence of rheumatoid factor in joints before and after synovectomy.
D000368:Aged; D001172:Arthritis, Rheumatoid / Q000276:immunology*; D005260:Female; D006801:Humans; D007719:Knee Joint; D008297:Male; D008875:Middle Aged; D012217:Rheumatoid Factor / Q000032:analysis*; D000074402:Synovectomy; D013582:Synovial Fluid / Q000276:immunology*
D012217:Rheumatoid Factor