title: Choline-induced attenuation of morphine analgesia in the rat.
mesh_terms: D000109:Acetylcholine / Q000032:analysis; D000818:Animals; D001923:Brain Chemistry / Q000187:drug effects; D002794:Choline / Q000494:pharmacology*; D004305:Dose-Response Relationship, Drug; D008297:Male; D009020:Morphine / Q000037:antagonists & inhibitors*; D010146:Pain; D051381:Rats; D011930:Reaction Time / Q000187:drug effects
chemical_list: D009020:Morphine; D002794:Choline; D000109:Acetylcholine