title: Incidence of the anti-nuclear factor in human sera.
mesh_terms: D001168:Arthritis; D001172:Arthritis, Rheumatoid / Q000097:blood*; D001327:Autoimmune Diseases; D003095:Collagen Diseases / Q000097:blood*; D006801:Humans; D015994:Incidence; D012216:Rheumatic Diseases / Q000097:blood*
keywords: ARTHRITIS, RHEUMATOID/blood; COLLAGEN DISEASES/blood; RHEUMATISM/blood