Scrapie--eradication and field trial study of the natural disease.
D000818:Animals; D001921:Brain / Q000473:pathology; D006041:Goats; D008636:Mesencephalon / Q000473:pathology; D012608:Scrapie / Q000453:epidemiology / Q000473:pathology / Q000517:prevention & control*; D012756:Sheep; D014481:United States