title: Nipecotic acid and guvacine antagonism on morphine analgesia in rats.
mesh_terms: D000698:Analgesia; D000818:Animals; D007276:Injections, Intraventricular; D008297:Male; D009020:Morphine / Q000037:antagonists & inhibitors*; D009125:Muscle Relaxants, Central; D009539:Nicotinic Acids / Q000008:administration & dosage / Q000494:pharmacology*; D009557:Nipecotic Acids / Q000008:administration & dosage / Q000494:pharmacology*; D051381:Rats; D013997:Time Factors
chemical_list: D009125:Muscle Relaxants, Central; D009539:Nicotinic Acids; D009557:Nipecotic Acids; C015910:guvacine; D009020:Morphine