title: Naloxone increases pain perception in rats and mice.
mesh_terms: D000818:Animals; D005260:Female; D008297:Male; D051379:Mice; D009020:Morphine / Q000037:antagonists & inhibitors / Q000494:pharmacology; D009270:Naloxone / Q000494:pharmacology*; D010146:Pain / Q000503:physiopathology*; D051381:Rats; D011930:Reaction Time / Q000187:drug effects; D013997:Time Factors
chemical_list: D009270:Naloxone; D009020:Morphine