The Effect of Co-infection of H9N2 Subtype Avian Influenza Virus and Newcastle Disease Virus on Virus Replication in the DF-1 of Chicken Embryo Fibroblasts
XIE Jun, SUN Ying-jie, ZHOU Chang-luan, ZHU Shan-yuan, DING Chan, BAI Jia-lin
ACTA VETERINARIA ET ZOOTECHNICA SINICA . 2018, (11): 2521 -2528 .  DOI: 10.11843/j.issn.0366-6964.2018.11.025