207 Received October 23, 2013; revised and accepted February 13, 2014. Published online March 20, 2014; doi: 10.1620/tjem.232.207. *These two authors contributed equally to this study. Correspondence: Hee Chul Han, Ph.D., M.D., Department of Physiology, Korea University College of Medicine, 126-1 Anam-Dong 5 Ga, Sungbuk-Gu, Seoul 136-701, South Korea. e-mail: [email protected] A Single Trial o...