Can J Vet Res 2019 Oct;83(4):285-290
Department of Basic Veterinary Science, College of Veterinary Medicine, Northeast Agricultural University, 600 Changjiang Road, Harbin 150030, Heilongjiang Province, P.R. China (R. Li, Wang, Zhang, Liu); Heilongjiang Key Laboratory for Animal Disease Control and Pharmaceutical Development, Harbin, China (R. Li, Liu); Harbin Veterinary Research Institute, Chinese Academy of Agricultural Sciences, Harbin, China (C. Li, Xia, Chen, Lu).