Department of Physiology, College of Oriental Medicine, KyungHee University, #1 Hoegi-Dong, Dongdaemun-gu, Seoul 130-701, South Korea. mklee77@khu.ac.kr|Department of Physiology, College of Oriental Medicine, KyungHee University, #1 Hoegi-Dong, Dongdaemun-gu, Seoul 130-701, South Korea. mklee77@khu.ac.kr