1. Departments of Pharmacology and Biomedical Science
2. Microbiology and Immunology
3. Department of Microbiology and Immunology; Yonsei University College of Medicine; 50 Yonsei-ro, Seodaemun-gu; Seoul; 120-752; Republic of Korea
4. Laboratory of Biological Protection, Department of Biological Responses; Institute for Virus Research, Kyoto University; Kyoto; 606-8507; Japan