title: Design principles: enkephalins with predictable mu/delta receptor specificity.
mesh_terms: D000818:Animals; D004745:Enkephalins / Q000138:chemical synthesis / Q000378:metabolism* / Q000494:pharmacology; D007700:Kinetics; D011957:Receptors, Opioid / Q000187:drug effects / Q000378:metabolism*; D017465:Receptors, Opioid, delta; D017450:Receptors, Opioid, mu; D013329:Structure-Activity Relationship
chemical_list: D004745:Enkephalins; D011957:Receptors, Opioid; D017465:Receptors, Opioid, delta; D017450:Receptors, Opioid, mu