Seung Kyu Choi(School of Life Sciences and Biotechnology, Korea University, Seoul 136-701, Korea.)
Sun uk Kim(School of Life Sciences and Biotechnology, Korea University, Seoul 136-701, Korea.)
Na Na Cho(School of Life Sciences and Biotechnology, Korea University, Seoul 136-701, Korea.)
Chang Sik Park(Division of Animal Science & Resources, Research Center for Transgenic Cloned Pigs, Chungnam National University , Daejeon 305-764, Korea.)
Sang Ho Lee(School of Life Sciences and Biotechnology, Korea University, Seoul 136-701, Korea.)
