1. Medical Proteomics Research Center, Korea Research Institute of Bioscience and Biotechnology, Daejeon 305-806, Republic of Korea
2. Development and Differentiation Research Center, Korea Research Institute of Bioscience and Biotechnology, Daejeon 305-806, Republic of Korea
3. Division of Life Science and Genetic Engineering, College of Life and Environmental Sciences, Korea University, Seoul 136-701, Republic of Korea