1Department of Biology, Sunchon National University, Suncheon 540-742, Republic of Korea,
2Department of Dental Hygiene, Gwangju Health College University, Gwangju 506-701, Republic of Korea,
3Biological Resource Center, Korea Research Institute of Bioscience and Biotechnology, Daejeon 305-333, Republic of Korea,
4Department of Agricultural Biotechnology, Seoul National University, Seoul 151-742, Republic of Korea,
5School of Biological Sciences, Seoul National University, Seoul 151-742, Republic of Korea
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Corresponding author:
Chi Nam Seong , Tel: 82-61-750-3613,