The relationship between MHC-DRB1 gene second exon polymorphism and hydatidosis resistance of Chinese merino (Sinkiang Junken type), Kazakh and Duolang sheep
R.Y. Li, W.Q. Hui, B. Jia, G.Q. Shi, Z.S. Zhao, H. Shen, Q. Peng, L.M. Lv, Q.W. Zhou and H.T. Li