title: [Effect of fentanyl on midbrain units and its antagonism by naloxone in rabbits].
mesh_terms: D000818:Animals; D005283:Fentanyl / Q000037:antagonists & inhibitors / Q000494:pharmacology*; D008636:Mesencephalon / Q000187:drug effects* / Q000502:physiology; D009270:Naloxone / Q000494:pharmacology*; D011817:Rabbits
chemical_list: D009270:Naloxone; D005283:Fentanyl