title: Opiate antagonists and Parkinson's disease.
mesh_terms: D004723:Endorphins / Q000502:physiology; D006801:Humans; D009270:Naloxone / Q000627:therapeutic use*; D010300:Parkinson Disease / Q000188:drug therapy* / Q000503:physiopathology
chemical_list: D004723:Endorphins; D009270:Naloxone