1. Division of Vaccine Science, Department of Microbiology and Immunology, The Institute of Medical Science, The University of Tokyo, Tokyo, Japan
2. Laboratory of Mockup Vaccine Project, National Institute of Bioinnovation, Health and Nutrition, Osaka, Japan
3. Laboratory of Vaccine Science, WPI Immunology Frontier Research Center, Osaka University, Osaka, Japan
4. Laboratory of Lymphocyte Differentiation, WPI Immunology Frontier Research Center, Osaka University, Osaka, Japan
5. Laboratory for Lymphocyte Differentiation, RIKEN Center for Integrative Medical Sciences (IMS), Yokohama, Kanagawa, Japan