Affiliation: | (1) Department of Veterinary Microbiology, Faculty of Agriculture, Yamaguchi University, 753-8515 Yamaguchi, Japan;(2) Department of Veterinary Pathology, Faculty of Agriculture, University of Miyazaki, 889-2192 Miyazaki, Japan;(3) Department of Veterinary Pathology, Faculty of Veterinary Medicine, Hanoi University of Agriculture, Trau Quy-Gia Lam-Ha Noi, Vietnam |