title: beta-endorphin: subjective and objective effects during acute narcotic abstinence in man.
mesh_terms: D000328:Adult; D004723:Endorphins / Q000627:therapeutic use*; D006801:Humans; D008297:Male; D008691:Methadone; D013375:Substance Withdrawal Syndrome / Q000188:drug therapy* / Q000503:physiopathology; D013997:Time Factors
chemical_list: D004723:Endorphins; D008691:Methadone