Conclusion Based on the criterion of MSE and the predicted vector infection rate, the method was proved feasible in determining pool size and number of pools.

结论依据感染率预估值确定混合样本大小与混合样本量的研究思路，具一定的可行性。

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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。

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The use of computer virus infection can read and write files, use the presence of memory, such as the interception of interruption of vector-borne and be able to carry out sabotage.

计算机病毒利用读写文件能进行感染，利用驻留内存、截取中断向量等方式能进行传染和破坏。

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