Mad cow disease: uncertainty rules.
Cherfas
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D000818:Animals; D001927:Brain Diseases / Q000662:veterinary*; D002417:Cattle; D002418:Cattle Diseases; D012756:Sheep; D012757:Sheep Diseases; D006113:United Kingdom; D014481:United States; D014777:Virus Diseases / Q000635:transmission / Q000662:veterinary*