RT Journal Article SR Electronic T1 In vivo studies on spinal opiate receptor systems mediating antinociception. I. Mu and delta receptor profiles in the primate. JF Journal of Pharmacology and Experimental Therapeutics JO J Pharmacol Exp Ther FD American Society for Pharmacology and Experimental Therapeutics SP 303 OP 316 VO 226 IS 2 A1 T L Yaksh YR 1983 UL http://jpet.aspetjournals.org/content/226/2/303.abstract AB