1. Graduate School of Biology-Oriented Science and Technology, Kinki University, Wakayama, Japan.
2. Department of Virology II, National Institute of Infectious Diseases, Tokyo, Japan.
3. Faculty of Life and Environmental Sciences, University of Yamanashi, Yamanashi, Japan.
4. Advanced Biotechnology Center, University of Yamanashi, Kofu-shi, Japan.
5. PRESTO, Japan Science and Technology Agency, Saitama, Japan.