title: An electromyographic method for the quantitative evaluation of narcotic analgesics in rats.
mesh_terms: D000701:Analgesics, Opioid / Q000494:pharmacology*; D000758:Anesthesia; D000818:Animals; D003913:Dextroamphetamine / Q000494:pharmacology; D004576:Electromyography; D008297:Male; D009119:Muscle Contraction / Q000187:drug effects; D051381:Rats; D012119:Respiration / Q000187:drug effects
chemical_list: D000701:Analgesics, Opioid; D003913:Dextroamphetamine