Enekphalins interfere with active avoidance acquisition, opiates do not.

Messing, R. B.R. B.MessingRigter, H, Jensen, R. A.H, Jensen, R. A.RigterMartinez, J. L, Vasquez, B. J.J. L, Vasquez, B. J.MartinezHannan, T.T.HannanLiang, K. C.K. C.LiangVeliquette, J.J.VeliquetteMcGaugh, J. L.J. L.McGaugh2010-09-202018-06-282010-09-202018-06-281979-11http://ntur.lib.ntu.edu.tw//handle/246246/203717en-USEnekphalins interfere with active avoidance acquisition, opiates do not.