title: Morphine abstinence syndrome: cholinergic mechanisms in the ventral periaqueductal gray of the dog.
mesh_terms: D000109:Acetylcholine / Q000378:metabolism; D000818:Animals; D001286:Atropine Derivatives / Q000494:pharmacology; D002217:Carbachol / Q000494:pharmacology; D004285:Dogs; D006801:Humans; D009020:Morphine / Q000494:pharmacology; D009021:Morphine Dependence / Q000378:metabolism*; D009270:Naloxone / Q000494:pharmacology; D010487:Periaqueductal Gray / Q000187:drug effects* / Q000378:metabolism; D011950:Receptors, Cholinergic / Q000187:drug effects* / Q000378:metabolism; D013375:Substance Withdrawal Syndrome / Q000378:metabolism*
chemical_list: D001286:Atropine Derivatives; D011950:Receptors, Cholinergic; D009270:Naloxone; D009020:Morphine; C006649:methylatropine; D002217:Carbachol; D000109:Acetylcholine