1. Institute of Military Veterinary Medicine, Academy of Military Medical Sciences, LiuYingXi Road No. 666, Changchun 130122, China
2. Laboratory Animal Center, Academy of Military Medical Sciences, Dongda Street No. 20, Beijing 100071, China
3. School of Agriculture and Biological Engineering, Tianjin University, Weijin Road No. 92, Tianjin 300072, China