Affiliation: | 1. Department of Biochemistry, College of Medicine and Applied Radiological Science Research Institute, Cheju National University, Jeju-si, 690-756, South Korea;2. Department of Microbiology, Seoul National University College of Medicine, Cancer Research Institute, Seoul, 110-799, South Korea;3. Department of Neuroscience, College of Medicine, Ewha Womans University, Seoul, 110-783, South Korea |