Reversal of spinal cord non-opiate analgesia by conditioned anti-analgesia in the rat.
Watkins LR, McGorry M, Schwartz B, Sisk D, Wiertelak EP, Maier SF. Reversal of spinal cord non-opiate analgesia by conditioned anti-analgesia in the rat. Pain. 1997 Jul; 71(3):237-47.