Serological reactions in rheumatoid arthritis.  IV.  Persistence of the serum factor which agglutinates sensitized sheep cells.
D000818:Animals; D001168:Arthritis; D001172:Arthritis, Rheumatoid / Q000097:blood*; D006384:Hemagglutination; D006386:Hemagglutination Tests; D012756:Sheep; D034561:Sheep, Domestic
ARTHRITIS, RHEUMATOID/blood in; HEMAGGLUTINATION