title: Etiologic problems of so-called idiopathic Parkinson's disease.
mesh_terms: D005917:Globus Pallidus / Q000378:metabolism; D006801:Humans; D009457:Neuroglia / Q000378:metabolism; D009474:Neurons / Q000378:metabolism; D010300:Parkinson Disease / Q000209:etiology* / Q000378:metabolism; D012313:RNA / Q000378:metabolism; D012328:RNA Viruses; D012897:Slow Virus Diseases / Q000150:complications / Q000378:metabolism
chemical_list: D012313:RNA