Polyarthritis of calves: experimental induction by a psittacosis agent.
D000818:Animals; D000831:Animals, Newborn; D001170:Arthritis, Infectious / Q000662:veterinary*; D002417:Cattle; D002418:Cattle Diseases / Q000209:etiology*; D002689:Chlamydia / Q000276:immunology / Q000302:isolation & purification / Q000472:pathogenicity; D002690:Chlamydia Infections / Q000662:veterinary*; D009500:Neutralization Tests; D013582:Synovial Fluid / Q000382:microbiology