title: Morphine pellet implantation in rats: quantitative assessment of tolerance and dependence.
mesh_terms: D000698:Analgesia; D000818:Animals; D001522:Behavior, Animal / Q000187:drug effects; D004361:Drug Tolerance / Q000187:drug effects; D006801:Humans; D008722:Methods; D009020:Morphine / Q000008:administration & dosage / Q000494:pharmacology*; D009021:Morphine Dependence; D009270:Naloxone; D051381:Rats; D013375:Substance Withdrawal Syndrome / Q000139:chemically induced; D013997:Time Factors
chemical_list: D009270:Naloxone; D009020:Morphine