Genetic Variation and Pathogenicity Analysis of Virulent Newcastle Disease Viruses Isolated from Ducks in Guizhou Province
DUAN Zhi-qiang，XU Hou-qiang，JI Xin-qin，CHEN Qiang，HU Yan，HU Shun-lin，LIU Xiu-fan
ACTA VETERINARIA ET ZOOTECHNICA SINICA . 2016, (8): 1623 -1634 .  DOI: doi: 10.11843/j.issn.0366-6964.2016.08.013