Affiliation: | 1. Department of Genetic Engineering, Sungkyunkwan University, Suwon 440-746, Republic of Korea;2. Department of Biochemistry, Kangwon National University, Chuncheon 200-701, Republic of Korea;3. Division of Forest Resources, Kangwon National University, Chuncheon 200-701, Republic of Korea;4. College of Veterinary Medicine, Kyungpook National University, Daegu 702-701, Republic of Korea |