A chemical alternative to the narcotic antagonist thesis.
D000818:Animals; D001923:Brain Chemistry; D003213:Conditioning, Psychological; D004361:Drug Tolerance; D006556:Heroin Dependence / Q000534:rehabilitation; D006801:Humans; D008691:Methadone / Q000627:therapeutic use; D009292:Narcotic Antagonists / Q000627:therapeutic use; D009294:Narcotics; D011600:Psychopharmacology; D051381:Rats; D013375:Substance Withdrawal Syndrome; D019966:Substance-Related Disorders / Q000628:therapy*
D009292:Narcotic Antagonists; D009294:Narcotics; D008691:Methadone