[The rheumatoid factor (important contribution to the study of rheumatoid arthritis)].
D001168:Arthritis; D001172:Arthritis, Rheumatoid / Q000097:blood*; D006801:Humans; D007159:Immunologic Tests; D012217:Rheumatoid Factor
D012217:Rheumatoid Factor
ARTHRITIS, RHEUMATOID/blood