title: Synovitis of recent onset. A clinicopathologic study during the first month of disease.
mesh_terms: D000293:Adolescent; D000328:Adult; D000368:Aged; D001171:Arthritis, Juvenile / Q000150:complications; D001172:Arthritis, Rheumatoid / Q000150:complications* / Q000175:diagnosis / Q000473:pathology; D001485:Basement Membrane; D001792:Blood Platelets; D002648:Child; D003165:Complement System Proteins; D004893:Erythema Nodosum / Q000150:complications; D005260:Female; D006801:Humans; D006967:Hypersensitivity / Q000150:complications; D007958:Leukocyte Count; D008180:Lupus Erythematosus, Systemic / Q000150:complications; D008297:Male; D008854:Microscopy, Electron; D008875:Middle Aged; D012217:Rheumatoid Factor / Q000032:analysis; D013582:Synovial Fluid / Q000032:analysis; D013583:Synovial Membrane / Q000473:pathology; D013585:Synovitis / Q000175:diagnosis / Q000209:etiology* / Q000473:pathology; D005719:gamma-Globulins
chemical_list: D005719:gamma-Globulins; D003165:Complement System Proteins; D012217:Rheumatoid Factor