Morphine effects on escape in the rhesus monkey.
D000818:Animals; D001362:Avoidance Learning / Q000187:drug effects*; D003975:Diazepam / Q000494:pharmacology; D000882:Haplorhini; D008253:Macaca mulatta; D008297:Male; D009020:Morphine / Q000494:pharmacology*
D009020:Morphine; D003975:Diazepam