1. Laboratory of Veterinary Pathology, Tokyo University of Agriculture and Technology, Fuchu-shi, Tokyo, Japan
2. Pathogenetic Veterinary Science, United Graduate School of Veterinary Sciences, Gifu University, Gifu-shi, Gifu, Japan
3. Cooperative Division of Veterinary Sciences, Graduate School of Agriculture, Tokyo University of Agriculture and Technology, Fuchu-shi, Tokyo, Japan
4. Chemicals Evaluation and Research Institute, Bunkyo-ku, Tokyo, Japan
5. Laboratory of Veterinary Pathology, College of Animal Science and Technology Veterinary Medicine, Southwest University, Chongqing, P.R. China
6. Institute of Global Innovation Research, Tokyo University of Agriculture and Technology, Fuchu-shi, Tokyo, Japan