1. Department of Basic Veterinary Medicine, College of Veterinary Medicine, Jilin University, Changchun 130062, Jilin, China
2. Department of Comparative and Experimental Medicine, Nagoya City University Graduate 24 School of Medical Sciences, Aichi 467-8601, Nagoya, Japan
3. Institute of Basic Medical Sciences and Laboratory Animal Resource Center, University of Tsukuba, Ibaraki 305-8575, Tsukuba, Japan
4. Department of Endocrinology and Metabolism, The Second Hospital of Jilin University, Changchun 130000, Jilin, China