title: Comparison of some ovine Chlamydia psittaci isolates by indirect immunofluorescence.
abstract: Four ovine abortion isolates, including the A22 vaccine isolate, and an isolate from a case of lamb arthritis, were compared by indirect immunofluorescence using antisera raised in chickens and mice. Cross titrations with homologous and heterologous antisera showed a one-way reaction between the single chlamydial isolate from a lamb with arthritis and the four isolates from cases of ovine enzootic abortion. The abortion isolates could not be distinguished.
mesh_terms: D000034:Abortion, Veterinary / Q000382:microbiology; D000818:Animals; D000942:Antigens, Bacterial / Q000032:analysis*; D001170:Arthritis, Infectious / Q000382:microbiology / Q000662:veterinary; D002460:Cell Line; D002645:Chickens; D002691:Chlamydophila psittaci / Q000145:classification / Q000276:immunology*; D003429:Cross Reactions; D005260:Female; D005455:Fluorescent Antibody Technique; D007106:Immune Sera / Q000276:immunology; D007114:Immunization / Q000662:veterinary; D051379:Mice; D011247:Pregnancy; D009956:Psittacosis / Q000382:microbiology / Q000662:veterinary*; D012756:Sheep; D012757:Sheep Diseases / Q000382:microbiology*
chemical_list: D000942:Antigens, Bacterial; D007106:Immune Sera