Reiter's syndrome.
D000328:Adult; D016918:Arthritis, Reactive / Q000097:blood / Q000175:diagnosis / Q000188:drug therapy / Q000209:etiology / Q000276:immunology; D003165:Complement System Proteins; D006801:Humans; D008297:Male; D008727:Methotrexate / Q000627:therapeutic use; D014526:Urethritis
D003165:Complement System Proteins; D008727:Methotrexate