1. Department of Veterinary Pathology, Tottori University, Tottori 680–8553, Japan
2. Laboratory of Pathology, Azabu University, Sagamihara-shi, Kanagawa 252–5201, Japan
3. Department of Agricultural Chemistry, Tottori University, Tottori 680–8553, Japan
4. Institute of Veterinary Medicine, Zaisan 210153, Ulaanbaatar, Mongolia