Affiliation: | (1) Department of Molecular Biology and Research Center for Cell Differentiation, Seoul National University, Seoul 151-742, Republic of Korea Fax:+82-2-887-6279; e-mail: sdpark@plaza.snu.ac.kr, KR;(2) Institute of Molecular Biology and Genetics, Seoul National University, Seoul 151-742, Republic of Korea, KR;(3) Department of Genetic Engineering, Chosun University, Kwangju 501-759, Republic of Korea, KR;(4) Department of Biology, Pusan Women's University, Pusan 616-060, Republic of Korea, KR |