title: Analgesia induced in vivo by central administration of enkephalin in rat.
mesh_terms: D000698:Analgesia; D000818:Animals; D007276:Injections, Intraventricular; D008024:Ligands / Q000008:administration & dosage / Q000037:antagonists & inhibitors / Q000494:pharmacology*; D009020:Morphine / Q000494:pharmacology; D009270:Naloxone / Q000494:pharmacology; D009419:Nerve Tissue Proteins / Q000008:administration & dosage / Q000037:antagonists & inhibitors / Q000494:pharmacology*; D009842:Oligopeptides / Q000008:administration & dosage / Q000037:antagonists & inhibitors / Q000494:pharmacology*; D051381:Rats; D011955:Receptors, Drug
chemical_list: D008024:Ligands; D009419:Nerve Tissue Proteins; D009842:Oligopeptides; D011955:Receptors, Drug; D009270:Naloxone; D009020:Morphine