Key Words tolerance - analgesia - opiate receptors - morphine - naloxone
I. P. Pavlov First Leningrad Medical Institute of Pharmacology, Academy of Medical Sciences of the USSR, Moscow (Presented by Academician of the Academy of Medical Sciences of the USSR A. V. Val''dman.) Translated from Byulleten'' Éksperimental''noi Biologii i Meditsiny, Vol. 102, No. 9, pp. 296–298, September, 1986.