1. College of Veterinary Medicine, Henan Agricultural University, Zhengzhou 450046, China
2. Ministry of Education Key Laboratory for Animal Pathogens and Biosafety, Zhengzhou 450046, China
3. Key Laboratory for Animal-derived Food Safety of Henan Province, Zhengzhou 450046, China
4. Longhu Laboratory of Advanced Immunology, Zhengzhou 450046, China