Liang, Keng-ChenKeng-ChenLiangRigter, H.H.RigterJensen, R. A.R. A.JensenMartinez, J. L. Jr.J. L. Jr.MartinezMcGaugh, J.J.McGaugh梁庚辰Messing, R. B.R. B.MessingVasquez, B. J.B. J.Vasquez2009-01-202018-06-282009-01-202018-06-281980http://ntur.lib.ntu.edu.tw//handle/246246/103710en-USEnkephalin and Fear-Motivated Behaviorjournal article10.1073/pnas.77.6.37292-s2.0-0019311348WOS:A1980JY17400124