1. Institute of Biological Science; Faculty of Science; Kochi University; Kochi; Japan
2. Department of Microbiology and Immunology; Shinshu University School of Medicine; Nagano; Japan
3. Department of Applied Science; Faculty of Science; Kochi University; Kochi; Japan
4. Department of Applied Biology; Kyoto Institute of Technology; Kyoto; Japan
5. Department of Functional Molecular Science; Graduate School of Biomedical Sciences; Hiroshima University; Hiroshima; Japan