1. Department of Veterinary Pathology, College of Animal Sciences, Henan Institute of Science and Technology, Xinxiang, China
2. China-Japan Union Hospital Jilin University, Changchun, Jilin, China
3. Division of Basic Biomedical Sciences, Sanford School of Medicine of the University of South Dakota, Vermillion, SD, USA
4. State Key Laboratory of Pathogen and Biosecurity, Beijing Institute of Microbiology and Epidemiology, Beijing, China
5. State Key Lab of Agrobiotechnology, Key Lab of Animal Epidemiology and Zoonosis, National Animal Transmissible Spongiform Encephalopathy Laboratory, College of Veterinary Medicine, China Agricultural University, Beijing, China