Spinal analgesia: comparison of the mu agonist morphine and the kappa agonist ethylketazocine.

Analgesics, Opioid/pharmacology Animals Cyclazocine/analogs & derivatives,pharmacology Ethylketocyclazocine Male Morphine/pharmacology Rats Reaction Time/drug effects Receptors, Opioid/drug effects Receptors, Opioid, kappa Receptors, Opioid, mu Spinal Cord/drug effects

Analgesics, Opioid Receptors, Opioid Receptors, Opioid, kappa Receptors, Opioid, mu Ethylketocyclazocine Morphine Cyclazocine