title: Is the scrapie agent a viroid?
mesh_terms: D000818:Animals; D006358:Hot Temperature; D010942:Plant Viruses / Q000302:isolation & purification; D011328:Prions / Q000187:drug effects / Q000302:isolation & purification* / Q000528:radiation effects; D011830:Radiation Effects; D012260:Ribonucleases / Q000494:pharmacology; D012608:Scrapie / Q000382:microbiology*; D012756:Sheep; D014779:Virus Replication
chemical_list: D011328:Prions; D012260:Ribonucleases