title: Effects of morphine and levorphanol on brain acetylcholine content in mice.
mesh_terms: D000109:Acetylcholine / Q000032:analysis* / Q000378:metabolism; D000818:Animals; D001923:Brain Chemistry / Q000187:drug effects*; D002531:Cerebellum / Q000032:analysis; D002540:Cerebral Cortex / Q000032:analysis; D004361:Drug Tolerance; D007981:Levorphanol / Q000494:pharmacology*; D008297:Male; D051379:Mice; D009020:Morphine / Q000494:pharmacology*; D011485:Protein Binding / Q000187:drug effects; D051381:Rats; D013237:Stereoisomerism
chemical_list: D007981:Levorphanol; D009020:Morphine; D000109:Acetylcholine