1. Laboratory of Vaccine Materials, Center for Vaccine and Adjuvant Research, and Laboratory of Gut Environmental System, National Institutes of Biomedical Innovation, Health, and Nutrition (NIBIOHN), Ibaraki City, Osaka, Japan
2. International Research and Development Center for Mucosal Vaccines, The Institute of Medical Science, University of Tokyo, Minato-ku, Tokyo, Japan
3. Graduate School of Medicine, Graduate School of Pharmaceutical Sciences, Graduate School of Density, Osaka University, Yamadaoka, Suita-shi, Osaka, Japan
4. Graduate School of Medicine, Kobe University, Tyuou-ku, Kobe-shi, Hyogo, Japan