Sang-Hwan Kim(Institute of Genetic Engineering, Hankyong National University, Ansung 456-749, Korea)
Kwan-Sik Min(Major In the Animal Biotechnology The Graduate Sohool of Biology & Information Technology Hankyong National University, Anseong 456-749, Korea)
Jong-Taek Yoon(Institute of Genetic Engineering, Hankyong National University, Ansung 456-749, Korea, Department of Animal Life Research, Hankyong National University, Anseong 456-749, Korea)