Affiliation: | a Department of Microbiology, Ajou University School of Medicine, San 5, Wonchon-dong, Yeongtong-gu, Suwon 443-721, Republic of Korea b Virology Division, National Veterinary Research Institute, National Veterinary Research and Quarantine Service, Anyang 430-824, Republic of Korea c Department of Genetic Engineering, Sungkyunkwan University, 300 Chunchun-dong Jangan-gu, Suwon 440-746, Republic of Korea d Department of Molecular Science and Technology, Ajou University, San 5, Woncheon-dong, Yeongtong-gu, Suwon 443-749, Republic of Korea |