Affiliation: | a Metabolic and Biomolecular Engineering National Research Laboratory, Department of Chemical and Biomolecular Engineering, Department of Biosystems, Bioinformatics Research Center, BioProcess Engineering Research Center and Center for Ultramicrochemical Process Systems, Korea Advanced Institute of Science and Technology, 373-1 Guseong-dong, Yuseong-gu, Daejeon 305-701, Republic of Korea b Department of Radiation Oncology, Yonsei University College of Medicine, Seoul 120-752, Republic of Korea |