1. Department of Neurobiology of Basic Experimental Center Medical College, Medical Department, Qingdao University, Qingdao, Shandong 266021, P.R. China
2. Department of Biochemistry and Molecular Biology of Basic Experimental Center Medical College, Medical Department, Qingdao University, Qingdao, Shandong 266021, P.R. China
3. Experimental Center for Undergraduates of Pharmacy, School of Pharmacy, Qingdao University, Qingdao, Shandong 266021, P.R. China