TY - GEN AU - Watkins,L R AU - Mayer,D J TI - Involvement of spinal opioid systems in footshock-induced analgesia: antagonism by naloxone is possible only before induction of analgesia SN - 0006-8993 PY - 1982///1202 KW - Analgesia KW - Animals KW - Electroshock KW - Forelimb KW - Hindlimb KW - Injections, Spinal KW - Male KW - Naloxone KW - administration & dosage KW - Rats KW - Rats, Inbred Strains KW - Spinal Cord KW - drug effects N1 - Publication Type: Comparative Study; Journal Article; Research Support, U.S. Gov't, Non-P.H.S.; Research Support, U.S. Gov't, P.H.S UR - https://doi.org/10.1016/0006-8993(82)90314-6 ER -