1. Animal Health Laboratory; School of Veterinary Medicine; Rakuno Gakuen University; Animal Health Lab; Bunkyodai Midori 582 Ebetsu Hokkaido 069-8501 Japan
2. Department of Veterinary Biochemistry; School of Veterinary Medicine; Ebetsu Hokkaido 069-8501 Japan
3. Meiji Seika Pharma Co., Ltd.; Tokyo Japan
4. National Agricultural Research Center for Hokkaido Region; National Agriculture and Food Research Organization; Sapporo Hokkaido Japan
5. Department of Animal Health 1; School of Veterinary Medicine; Azabu University; Sagamihara Kanagawa 252-5201 Japan
6. Department of Veterinary Virology; School of Veterinary Medicine; Rakuno Gakuen University; 582 Bunkyodai Ebetsu Hokkaido 0698501 Japan
7. Department of Food Microbiology and Food Safety; School of Veterinary Medicine; Rakuno Gakuen University; Hokkaido Ebetsu Japan