title: Scrapie: strategies, stalemates, and successes.
mesh_terms: D000818:Animals; D002490:Central Nervous System / Q000382:microbiology; D005814:Genes, Viral; D006801:Humans; D011328:Prions / Q000235:genetics / Q000302:isolation & purification; D012608:Scrapie / Q000382:microbiology*; D012756:Sheep
chemical_list: D011328:Prions