1. Dept. of Food Science and Technology; Chung-Ang Univ.; Ansung 456-756 South Korea
2. Animal Genomics and Bioinformatics Div., Natl. Inst. of Animal Science; Rural Development Administration; Wanju 565-851 South Korea
3. Dept. of Biological Sciences; Kyonggi Univ.; Suwon 442-760 South Korea