1. A method for determining loss of pain sensation;D'Amour;J. Pharmacol. Exp. Ther.,1941
2. The tail-flick test;Dewey,1975
3. Beta-endorphin-(1–27) is an antagonist of beta-endorphin analgesia;Hammonds,1984
4. Selective antagonism of the antinociceptive effect of intrathecally applied alpha adrenergic agonists by intrathecal prazosin and intrathecal yohimbine;Howe;J. Pharmacol. Exp. Ther.,1983
5. Examination of spinal mono-amine receptors through which brainstem opiate-sensitive systems act in the rat brain;Jensen;Brain Res.,1984