Affiliation: | 1.Department of Microbiology and Immunology, College of Veterinary Medicine, China Agricultural University, BeijingChina;2.Beijing Institute of Biotechnology, Academy of Military Medical Sciences (AMMS), BeijingChina;3.College of Veterinary Medicine, Henan Agricultural University, No. 15 Longzihu University Area, Zhengzhou New District, Zhengzhou, Henan, China |