Tolerance to theantinociceptiveeffect of morphinemicroinjections intothe ventral but notlateral–dorsalperiaqueductal grayof the rat. Vı́ctor TortoriciCarolyn S. RobbinsMichael M. Morgan1999 год

Tolerance to the antinociceptive effect of morphine microinjections into the ventral but not lateral–dorsal periaqueductal gray of the rat.
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