Opiate receptors in the central nervous system.
D000818:Animals; D002478:Cells, Cultured; D002490:Central Nervous System / Q000378:metabolism*; D004361:Drug Tolerance; D004723:Endorphins / Q000378:metabolism; D006801:Humans; D066298:In Vitro Techniques; D008024:Ligands; D008968:Molecular Conformation; D011957:Receptors, Opioid / Q000378:metabolism*; D019966:Substance-Related Disorders / Q000378:metabolism
D004723:Endorphins; D008024:Ligands; D011957:Receptors, Opioid