1. Laboratory of Ultrastructural Virology, Institute for Frontier Life and Medical Sciences, Kyoto University, Kyoto, Japan
2. Department of Molecular Virology, Graduate School of Medicine, Kyoto University, Kyoto, Japan
3. Laboratory of Ultrastructural Virology, Graduate School of Biostudies, Kyoto University, Kyoto, Japan
4. CREST, Japan Science and Technology Agency, Kawaguchi, Japan