Analysis of the Immune Efficacy of Attenuated Live Vaccine in the Pig Herds Previously Infected with Wild-type Porcine Reproductive and Respiratory Syndrome Virus
XU Xin-ting, SHI Kai-chuang, LI Chang-ting, LONG Fei-xiang, MO Sheng-lan, CHEN Han-zhong
《中国畜牧兽医》 . 2016, (9): 2447 -2454 .  DOI: 10.16431/j.cnki.1671-7236.2016.09.033