1. Department of Microbiology, Faculty of Medicine, Kagawa University, Miki, Kagawa 761‑0793, Japan
2. Division of Biology, Hyogo College of Medicine, Mukogawa, Nishinomiya 663‑8501, Japan
3. Department of Applied Bioscience, Faculty of Agriculture, Kagawa University, Miki, Kagawa 761‑0795, Japan
4. Advance Radiation Research, Education and Management Center, Tokushima University, Tokushima 770‑8503, Japan
5. Department of Medical Pharmacology, Institute of Biomedical Sciences, Tokushima University Graduate School, Tokushima 770‑8505, Japan