title: Detection of the scrapie agent in tissues of normal mice with special reference to the possibility of accidental laboratory contamination.
mesh_terms: D000818:Animals; D001921:Brain; D007757:Laboratory Infection; D051379:Mice; D009698:Nucleoproteins / Q000302:isolation & purification; D011328:Prions / Q000302:isolation & purification*; D012608:Scrapie / Q000145:classification / Q000209:etiology; D012756:Sheep; D013997:Time Factors; D014020:Tissue Extracts / Q000008:administration & dosage
chemical_list: D009698:Nucleoproteins; D011328:Prions; D014020:Tissue Extracts