1. Department of Chemical Engineering, College of Engineering, Yonsei University, Seoul 120-749, Republic of Korea, ATGen, Advanced Technology Research Center, 68 Yatap-dong, Bundang-gu, Seongnam-si, Gyeonggi-do, 463-816, South Korea, Department of Physics, College of Natural Science, Ajou University, Suwon 433-749, South Korea, Department of Radiology, College of Medicine, Yonsei University, Seoul 120-752, South Korea, and Department of Biochemistry and Molecular Biology, Center for Chronic Metabolic...