Preparation and Efficacy of a Live Newcastle Disease Virus Vaccine Encapsulated in Chitosan Nanoparticles Zhao, Kai ; Chen, Gang ; Shi, Xing-ming ; Gao, Ting-ting ; Li, Wei ; Zhao, Yan ; Zhang, Feng-qiang ; Wu, Jin ; Cui, Xianlan ; Wang, Yun-Feng Abstract Publication: PLoS ONE Pub Date: December 2012 DOI: 10.1371/journal.pone.0053314 Bibcode: 2012PLoSO...753314Z