Affiliation: | 1.Department of Biochemistry, Chung-Ang University College of Medicine, 221 Heukseok-dong, Dongjak-gu, Seoul 156–756, Korea;2.Department of Dermatology, Seoul National University Bundang Hospital, 300 Gumi-dong, Bundang-gu, Seongnam-si, Kyoungki-do 463–707, Korea |