Gastritis associated with Ostertagia bisonis in Montana range cattle.
D000818:Animals; D002417:Cattle; D002418:Cattle Diseases / Q000209:etiology*; D005756:Gastritis / Q000209:etiology / Q000662:veterinary*; D009009:Montana; D009349:Nematode Infections / Q000150:complications / Q000662:veterinary*