title: Opioid binding properties of brain and peripheral tissues: evidence for heterogeneity in opioid ligand binding sites.
mesh_terms: D000313:Adrenal Medulla / Q000378:metabolism; D000818:Animals; D001921:Brain / Q000378:metabolism*; D002417:Cattle; D003342:Corpus Striatum / Q000378:metabolism; D004090:Dihydromorphine / Q000378:metabolism; D016308:Enkephalin, Leucine-2-Alanine; D004745:Enkephalins / Q000378:metabolism; D006168:Guinea Pigs; D007082:Ileum / Q000378:metabolism; D066298:In Vitro Techniques; D008024:Ligands; D008297:Male; D051379:Mice; D009928:Organ Specificity; D011817:Rabbits; D051381:Rats; D011957:Receptors, Opioid / Q000378:metabolism*; D013045:Species Specificity; D014649:Vas Deferens / Q000378:metabolism
chemical_list: D004745:Enkephalins; D008024:Ligands; D011957:Receptors, Opioid; D016308:Enkephalin, Leucine-2-Alanine; D004090:Dihydromorphine