title: Isolation of a virus from the lungs of Montana sheep affected with progressive pneumonia.
mesh_terms: D000818:Animals; D046508:Culture Techniques; D008168:Lung / Q000382:microbiology; D011024:Pneumonia, Viral / Q000662:veterinary*; D012756:Sheep; D012757:Sheep Diseases / Q000209:etiology*; D014776:Virus Cultivation; D014713:Viruses, Unclassified / Q000302:isolation & purification*