title: A possible role for the dorsal periventricular catecholamine bundle in stimulation produced analgesia: a behavioral and histochemical study.
mesh_terms: D000818:Animals; D001921:Brain / Q000502:physiology*; D002395:Catecholamines / Q000378:metabolism*; D004580:Electronarcosis; D008297:Male; D010146:Pain / Q000503:physiopathology; D051381:Rats; D011957:Receptors, Opioid / Q000032:analysis*
chemical_list: D002395:Catecholamines; D011957:Receptors, Opioid