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A iral syndrome remains a likely cause of his presentation .

病毒综合征仍然是患者症状的一种可能的病因。

Integrase is one of the three enzymes of the irus that is required for iral replication .

整合酶是病毒复制所需要的三种酶之一。

In this study , we aimed to assess the relationship between pre-chemotherapy hb iral load and the surial of hcc patients .

在本研究中，我们旨在分析化疗前乙肝病毒负荷量与肝癌患者生存情况之间的关系。

Specific mutations in a iral protein , the polymerase , contribute to the ability of the bird irus to jump the species barrier to humans .

病毒蛋白质的特有的突变和多聚酶促成了禽类病毒跨越种间障碍传播到人类的能力。

Antibiotics are useless against iruses , such as influenza , but bacterial and iral infection often cause ery similar symptoms .

抗生素对于病毒如流感病毒无效，但是病毒感染和细菌感染引起的症状常常很类似。