Gui-Dong DAI, born in 1968, male, Ph.D., Department of Pharmacology, Ningxia Medical College. Majoring in toxicology and pharmacology. E-mail: daiguidong@ 163.com Correspondence should be addressed to professor Xin-Ru WANG, Jiangsu Key Laboratory of Applied Toxicology, Nanjing Medical University, 140 Hanzhong Road, Nanjing 210029, Jiangsu, China. Tel: 86-25-86862939. Fax: 86-25-86527613. E-mail: xrwang@njmu.edu, cn