1. The United Graduate School of Veterinary Science, Yamaguchi University, 1677-1 Yoshida, Yamaguchi 753-8515, Japan
2. Joint Faculty of Veterinary Medicine, Laboratory of Veterinary Public Health, Yamaguchi University, 1677-1 Yoshida, Yamaguchi 753-8515, Japan
3. Institute for Advanced Biosciences, Keio University, 5322 Endo, Fujisawa, Kanagawa 252-0882, Japan
4. Graduate School of Medicine, Dentistry and Pharmaceutical Science, Okayama University, 2-5-1 Shikata-cho, Kita-ku, Okayama 700-8558, Japan
5. Department of Sciences, Graduate School of Sciences and Technology for Innovation, Yamaguchi University, 1677-1 Yoshida, Yamaguchi 753-8515, Japan
6. Department of Research Infrastructure, National BioResource Project of Japan Agency for Medical Research and Development, Chiyoda-ku, Tokyo 100-0004, Japan