Antagonism of delta(2)-opioid receptors by naltrindole-5'-isothiocyanate attenuates heroin self-administration but not antinociception in rats.
Martin TJ, Kim SA, Cannon DG, Sizemore GM, Bian D, Porreca F, Smith JE. Antagonism of delta(2)-opioid receptors by naltrindole-5'-isothiocyanate attenuates heroin self-administration but not antinociception in rats. J Pharmacol Exp Ther. 2000 Sep; 294(3):975-82.