title: Antagonist study in St. Louis.
mesh_terms: D000293:Adolescent; D000328:Adult; D000367:Age Factors; D003258:Consumer Behavior; D003496:Cyclazocine / Q000009:adverse effects / Q000627:therapeutic use*; D004522:Educational Status; D005059:Euphoria / Q000187:drug effects; D006556:Heroin Dependence / Q000534:rehabilitation*; D006760:Hospitalization; D006801:Humans; D008297:Male; D008393:Marriage; D008691:Methadone / Q000627:therapeutic use; D008923:Missouri; D009790:Occupations; D010352:Patient Dropouts; D013808:Therapeutic Community
chemical_list: D003496:Cyclazocine; D008691:Methadone