title: The bacterial flora of the respiratory tract of normal and pneumonic sheep.
mesh_terms: D000818:Animals; D001419:Bacteria / Q000302:isolation & purification*; D011014:Pneumonia / Q000382:microbiology / Q000662:veterinary*; D012137:Respiratory System / Q000382:microbiology*; D012756:Sheep; D012757:Sheep Diseases / Q000382:microbiology*