1. Comparison of the effects of substance P, neurokinin A, physalaemin and eledoisin in facilitating a nociceptive reflex in the rat;Cridland;Brain Res.,1986
2. Naloxone fails to block substance P-induced excitation of spinal nociceptive units;Henry;Brain Res. Bull.,1983
3. The effects of morphine, methadone and meperidine on some reflex responses of spinal animals to nociceptive stimulation;Irwin;J. Pharmacol. Exp. Ther.,1951
4. Effects of morphine, nalorphine, cyclazocine, and naloxone on the flexor reflex;McClane;Int. J. Neuropharmacol.,1967
5. Morphine does not antagonize the substance P mediated excitation of dorsal horn neurons;Piercey;Brain Res.,1980