title: Opiate receptor affinities and behavioral effects of enkephalin: structure-activity relationship of ten synthetic peptide analogues.
mesh_terms: D000698:Analgesia; D000818:Animals; D001522:Behavior, Animal / Q000187:drug effects; D001667:Binding, Competitive; D001921:Brain / Q000378:metabolism*; D008024:Ligands; D008297:Male; D009270:Naloxone / Q000378:metabolism; D009842:Oligopeptides / Q000138:chemical synthesis / Q000494:pharmacology; D051381:Rats; D011955:Receptors, Drug; D013329:Structure-Activity Relationship
chemical_list: D008024:Ligands; D009842:Oligopeptides; D011955:Receptors, Drug; D009270:Naloxone