title: Selective antagonists at the opiate delta-receptor.
mesh_terms: D000701:Analgesics, Opioid / Q000494:pharmacology; D000818:Animals; D003496:Cyclazocine / Q000031:analogs & derivatives / Q000494:pharmacology; D004743:Enkephalin, Leucine / Q000031:analogs & derivatives / Q000494:pharmacology; D004744:Enkephalin, Methionine / Q000494:pharmacology; D016314:Ethylketocyclazocine; D005048:Etorphine / Q000494:pharmacology; D006168:Guinea Pigs; D066298:In Vitro Techniques; D008297:Male; D051379:Mice; D009022:Morphine Derivatives / Q000494:pharmacology; D009292:Narcotic Antagonists / Q000494:pharmacology*; D011957:Receptors, Opioid / Q000187:drug effects* / Q000502:physiology; D017465:Receptors, Opioid, delta
chemical_list: D000701:Analgesics, Opioid; D009022:Morphine Derivatives; D009292:Narcotic Antagonists; D011957:Receptors, Opioid; D017465:Receptors, Opioid, delta; D005048:Etorphine; D004744:Enkephalin, Methionine; D016314:Ethylketocyclazocine; D004743:Enkephalin, Leucine; C036405:ICI 154129; D003496:Cyclazocine; C010616:normorphine