Increase in NADPH-diaphorase-positive and neuronal NO synthase immunoreactive neurons in the rat spinal trigeminal nucleus following infusion of a NO donor--evidence for a feed-forward process in NO production involved in trigeminal nociception.

Increase in NADPH-diaphorase-positive and neuronal NO synthase immunoreactive neurons in the rat spinal trigeminal nucleus following infusion of a NO donor--evidence for a feed-forward process in NO production involved in trigeminal nociception.