Small fertile hydatid cysts in British horses.
D000818:Animals; D004444:Echinococcosis, Hepatic / Q000469:parasitology / Q000662:veterinary*; D004739:England; D006734:Horse Diseases / Q000469:parasitology*; D006736:Horses / Q000469:parasitology*; D008099:Liver / Q000469:parasitology