Gui-Dong DAI, male, born in 1968, Ph.D. Main research field is 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. Fax: 86-25-86527613. Tel: 86-25-86862939. E-mail: xrwang@njmu.edu.cn