title: Interactions of leucine enkephalin and narcotics with opioid receptors.
mesh_terms: D000700:Analgesics; D000818:Animals; D003342:Corpus Striatum / Q000378:metabolism; D004361:Drug Tolerance; D004723:Endorphins / Q000494:pharmacology*; D004743:Enkephalin, Leucine; D004745:Enkephalins / Q000494:pharmacology*; D006801:Humans; D066298:In Vitro Techniques; D008297:Male; D051379:Mice; D009020:Morphine / Q000494:pharmacology; D009270:Naloxone / Q000494:pharmacology; D009294:Narcotics / Q000494:pharmacology*; D011957:Receptors, Opioid / Q000378:metabolism*; D019966:Substance-Related Disorders / Q000378:metabolism
chemical_list: D000700:Analgesics; D004723:Endorphins; D004745:Enkephalins; D009294:Narcotics; D011957:Receptors, Opioid; D009270:Naloxone; D004743:Enkephalin, Leucine; D009020:Morphine