title: Speculations on the etiology of Parkinson's disease.
mesh_terms: D000375:Aging; D001424:Bacterial Infections / Q000150:complications; D001930:Brain Injuries / Q000150:complications; D002493:Central Nervous System Diseases / Q000150:complications; D005609:Free Radicals; D006801:Humans; D008297:Male; D009294:Narcotics / Q000506:poisoning; D010300:Parkinson Disease / Q000209:etiology* / Q000235:genetics; D010302:Parkinson Disease, Secondary / Q000139:chemically induced; D014777:Virus Diseases / Q000150:complications
chemical_list: D005609:Free Radicals; D009294:Narcotics