To clone gene of the TRAIL and construct its prokaryotic expression vector.
目的克隆人TRAIL基因，构建其原核表达载体。
2
Objective To construct the clone vector of S gene in occult hepatitis B virus infection. To analyse its mutations and to construct its prokaryotic expression vector.
目的构建克隆载体，分析隐匿性乙型肝炎病毒S基因的突变情况，构建其原核融合蛋白表达载体。
3
Construction of the prokaryotic expression vector provided a foundation for further studying the function of NS1 protein and preparation of NS1 antibody.