Paradoxical analgesia produced by low doses of the opiate-antagonist naloxone is mediated by interaction at a site with characteristics of the delta opioid receptor.

Taiwo YO, Basbaum AI, Perry F, Levine JD. Paradoxical analgesia produced by low doses of the opiate-antagonist naloxone is mediated by interaction at a site with characteristics of the delta opioid receptor. J Pharmacol Exp Ther. 1989 Apr; 249(1):97-100.

1989
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Taiwo YO, Basbaum AI, Perry F, Levine JD