Liu Dong, Zhu Jian-Ying, Niu Zhong-Xiang
College of Animal Science & Veterinary Medicine, Shandong Agriculture University, Tai'an, 271018, People's Republic of China.
Clin Vaccine Immunol. 2008 Jun;15(6):901-10. doi: 10.1128/CVI.00465-07. Epub 2008 Apr 9.