1. Laboratory of Molecular Immunology and Infectious Disease, Joint Graduate School of Veterinary Medicine, Yamaguchi University, Yoshida, Yamaguchi, Japan
2. Faculty of Science and Engineering, Waseda University, Okubo, Shinjuku-ku, Tokyo, Japan
3. Oishi Animal Clinic, Oshu-shi, Iwate, Japan
4. Joint Graduate School of Veterinary Medicine, Yamaguchi University, Yoshida, Yamaguchi, Japan
5. Laboratory of Veterinary Pathology, Joint Faculty of Veterinary Medicine, Yamaguchi University, Yoshida, Yamaguchi, Japan
6. Institute of Gene Research, Science Research Center, Yamaguchi University, Minami-kogushi, Ube, Japan
7. Life Science Division, Advanced Technology Institute, Yamaguchi University, Yoshida, Yamaguchi, Japan