1. Avian Immunosuppressive Diseases Division, State Key Laboratory for Animal Disease Control and Prevention, Harbin Veterinary Research Institute, Chinese Academy of Agricultural Sciences, No. 678 Haping Road, Xiangfang District, Harbin, Heilongjiang 150069, China
2. WOAH Reference Laboratory for Infectious Bursal Disease, Harbin Veterinary Research Institute, Chinese Academy of Agricultural Sciences, Harbin, China
3. National Laboratory of Biomacromolecules, CAS Center for Excellence in Biomacromolecules, Institute of Biophysics, Chinese Academy of Sciences, Beijing, China