title: Pharmacology of opioids. Part 1. Basic aspects.
mesh_terms: D000818:Animals; D001665:Binding Sites / Q000187:drug effects; D004285:Dogs; D004723:Endorphins / Q000378:metabolism / Q000494:pharmacology*; D004745:Enkephalins / Q000494:pharmacology; D006801:Humans; D009294:Narcotics / Q000494:pharmacology*; D011957:Receptors, Opioid / Q000187:drug effects*; D013329:Structure-Activity Relationship
chemical_list: D004723:Endorphins; D004745:Enkephalins; D009294:Narcotics; D011957:Receptors, Opioid