RT Journal Article SR Electronic T1 Effects of a Delta-Opioid Receptor Ligand on Nociceptive Threshold JF Journal of Pharmacology and Experimental Therapeutics JO J Pharmacol Exp Ther FD American Society for Pharmacology and Experimental Therapeutics SP 250 OP 250 DO 10.1124/jpet.113.1113HI VO 347 IS 2 YR 2013 UL http://jpet.aspetjournals.org/content/347/2/250.1.abstract AB