1. National Research Center of Engineering and Technology for Veterinary Biologicals Institute of Veterinary Immunology and Engineering, Jiangsu Academy of Agricultural Sciences Nanjing P. R. China
2. Jiangsu Co‐innovation Center for Prevention and Control of Important Animal Infectious Diseases and Zoonoses Yangzhou P. R. China
3. School of pharmacy Jiangsu University Zhenjiang P. R. China