title: Vaccination against enzootic abortion in ewes.
mesh_terms: D000034:Abortion, Veterinary / Q000517:prevention & control*; D000818:Animals; D001428:Bacterial Vaccines / Q000276:immunology*; D002691:Chlamydophila psittaci / Q000276:immunology*; D005260:Female; D011247:Pregnancy; D009956:Psittacosis / Q000517:prevention & control / Q000662:veterinary; D012756:Sheep; D012757:Sheep Diseases / Q000276:immunology; D014611:Vaccination / Q000662:veterinary
chemical_list: D001428:Bacterial Vaccines