一种新的鸡源冠状病毒的结构蛋白及基因结构分析

Since 1995，a infectious disease prevailed with proventriculus swelling in layer chicken flocks, considered so-called new infectious disease. In order to understand the pathogen of the disease, we analysed biological and genic properties of the pathogen. The research results indicated that the pathogen caused proventriculus lesions was a variant infectious bronchitis virus.Key words Chicken; Infectious bronchitis virus; pathogenicity; Spike gene nucleocapsid gene

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