title: Differential cross-tolerance among morphine, methadone, and ethylketocyclazocine--EEG and behavior.
mesh_terms: D000701:Analgesics, Opioid / Q000494:pharmacology*; D000818:Animals; D001522:Behavior, Animal / Q000187:drug effects*; D001921:Brain / Q000187:drug effects / Q000502:physiology*; D003496:Cyclazocine / Q000031:analogs & derivatives* / Q000494:pharmacology; D004361:Drug Tolerance; D004569:Electroencephalography; D016314:Ethylketocyclazocine; D005260:Female; D008691:Methadone / Q000494:pharmacology*; D009020:Morphine / Q000494:pharmacology*; D051381:Rats; D011919:Rats, Inbred Strains
chemical_list: D000701:Analgesics, Opioid; D016314:Ethylketocyclazocine; D009020:Morphine; D003496:Cyclazocine; D008691:Methadone