Affiliation: | 1. Central Research Laboratories, Hokko Chemical Industry Co., Ltd., Atsugi, Kanagawa, Japan;2. Department of Applied Biological Sciences, Tokyo University of Agriculture and Technology, Fuchu, Tokyo, Japan;3. Research and Education Center for Prevention of Global Infectious Diseases of Animals, Tokyo University of Agriculture and Technology, Fuchu, Tokyo, Japan;4. Cooperative Department of Veterinary Medicine, Tokyo University of Agriculture and Technology, Fuchu, Tokyo, Japan |