1. School of Basic Medical Sciences, Capital Medical University, No.10 Xitoutiao, Youanmen, Fengtai District, Beijing 100069, P.R. China
2. Department of Laboratory Animal, Capital Medical University, No.10 Xitoutiao, Youanmen, Fengtai District, Beijing 100069, P.R. China
3. Institute of Jingfeng Medical Laboratory Animals, No. 20 Dongdajie, Fengtai District, Beijing 100071, P.R. China
4. Animal Science and Technology College, Jilin Agricultural University, No. 2888 Xin Cheng Da Jie, Changchun 130118, P.R. China