title: Preclinical pharmacology of metkephamid (LY127623), a Met-enkephalin analogue.
mesh_terms: D000818:Animals; D004305:Dose-Response Relationship, Drug; D004361:Drug Tolerance; D004744:Enkephalin, Methionine / Q000031:analogs & derivatives* / Q000494:pharmacology; D005260:Female; D066298:In Vitro Techniques; D008297:Male; D008431:Maternal-Fetal Exchange; D008614:Meperidine / Q000494:pharmacology; D051379:Mice; D009020:Morphine / Q000494:pharmacology; D011247:Pregnancy; D051381:Rats; D011930:Reaction Time / Q000187:drug effects; D011957:Receptors, Opioid / Q000187:drug effects; D012756:Sheep
chemical_list: D011957:Receptors, Opioid; D004744:Enkephalin, Methionine; D009020:Morphine; D008614:Meperidine; C028208:metkephamid