title: Opiate structure and activity--a guide to understanding the receptor.
mesh_terms: D001665:Binding Sites; D055598:Chemical Phenomena; D002621:Chemistry; D008956:Models, Chemical; D008958:Models, Molecular; D009020:Morphine; D009292:Narcotic Antagonists; D009294:Narcotics; D011957:Receptors, Opioid; D013329:Structure-Activity Relationship
chemical_list: D009292:Narcotic Antagonists; D009294:Narcotics; D011957:Receptors, Opioid; D009020:Morphine