1. Department of Stem Cell and Regenerative Biology, College of Animal Bioscience & Technology, Konkuk University, Seoul, Korea.
2. Department of Food Bioscience, College of Biomedical & Health Science, Konkuk University, Chung-ju, Korea.
3. Department of Animal Science, College of Agriculture, Chungbuk National University, Choung-ju, Korea.
4. Animal Biotechnology Division, National Institute of Animal Science, RDA, Wanju, Korea.