Abstract
Mu antagonist and kappa agonist properties of beta-funaltrexamine (beta-FNA) in vivo: long-lasting spinal analgesia in mice.
J A Qi, J S Heyman, R J Sheldon, R J Koslo and F Porreca
Journal of Pharmacology and Experimental Therapeutics March 1990, 252 (3) 1006-1011;