1. Laboratory of Veterinary Emergency MedicineGraduate School of Agricultural and Life Sciences, The University of Tokyo 1‐1‐1Yayoi, Bunkyo‐ku, Tokyo 113‐8657 Japan
2. Center for Disease Biology and Integrative MedicineGraduate School of Medicine, The University of Tokyo 7‐3‐1 Hongo, Bunkyo‐ku, Tokyo 113‐0033 Japan
3. Asahi Kasei Corporation 4‐3400‐1 Asahi‐machi, Nobeoka, Miyazaki 882‐0847 Japan
4. Veterinary Medical CenterGraduate School of Agricultural and Life Sciences, The University of Tokyo 1‐1‐1Yayoi, Bunkyo‐ku, Tokyo 113‐8657 Japan