The problem of the antibody nature of the rheumatoid factor.
D000906:Antibodies; D001168:Arthritis; D001172:Arthritis, Rheumatoid / Q000276:immunology*; D006801:Humans; D012217:Rheumatoid Factor
D000906:Antibodies; D012217:Rheumatoid Factor
ANTIBODIES; ARTHRITIS, RHEUMATOID/immunology