Affiliation: | (1) Department of Biology and Medicinal Science, PaiChai University, Doma-2-dong, Seo-gu, Daejeon, 302-735, Korea;(2) Mass Spectrometer Research Center, Korea Basic Science Institute, 52 Eoeun-dong, Yusung-gu, Daejeon, 305-333, Korea;(3) Graduate School of Analytical Science and Technology, Chungnam National University, 79 Daehangno, Yusung-gu, Daejeon, 305-333, Korea; |