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Craft, R M; Dykstra, L A (1993) Morphine antagonizes U50,488's effects in a squirrel monkey shock titration procedure. Eur J Pharmacol 234:199-207
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Craft, R M; Dykstra, L A (1992) Agonist and antagonist activity of kappa opioids in the squirrel monkey: II. Effect of chronic morphine treatment. J Pharmacol Exp Ther 260:334-42
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Craft, R M; Dykstra, L A (1992) Agonist and antagonist activity of kappa opioids in the squirrel monkey: I. Antinociception and urine output. J Pharmacol Exp Ther 260:327-33
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