1. Department of Theriogenology and Biotechnology, College of Veterinary Medicine and the Research Institute for Veterinary Science, Seoul National University, Seoul, 151-742, Republic of Korea.
2. Department of Physiology, Faculty of Veterinary Medicine, Zagazig University, 44159, Egypt.
3. Designed Animal and transplantation, Institute of green Bio Science Technology, Seoul National University, Pyeongchang, 232-916, Republic of Korea.