Authors:
Ying Wan 1, ZhengwangShi 1, Gaochaung Peng 1, Li juan Wang1, Juncong Luo 1, Yi Ru1, Gaijing Zhou 1, Yuan Ma1, Rui Song 1, Bo Yang1, Liyan Cao 1,Hong Tian 1* andHaixue Zheng 1**
1State Key Laboratory of Veterinary Etiological Biology,Lanzhou Veterinary Research Institute, Chinese Academy of Agricultural Sciences, Lanzhou 730046, China