Recently, we demonstrated by using sequence analysis and transient expression assay that a newly isolated BFV 3026 strain also encoded an internal promoter (IP) in .
以该实验室分离并鉴定的牛泡沫病毒 (BFV)中国毒株 (BFV3 0 2 6)为材料 ,用PCR方法首次克隆了位于 env 基因 3′端的内部启动子 ,经序列分析后 ,引入luc基因作瞬时表达分析。