The number of CD4 cells in infected persons is a measure of the degree of immune system damage to one of the main indicators.

CD4细胞的数量是衡量感染者免疫系统受损程度的一个主要指标。

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But in most people they studied, the virus in the blood did not match the sequence in the CD4 cells, indicating that HIV was hiding elsewhere.

但根据大部分人的研究表明，血液中的病毒序列并不和CD 4细胞内的相匹配，这就预示着HIV病毒可能另有藏身之处。

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Usually for this co-infection population we first treat the HIV with HAART therapy and induce the CD4 cells then we will treat the co-infection of HCV with pegylated interferon and ribavirin.

通常对这类混合感染者，我们首先用高效抗逆转录病毒治疗、诱导CD4细胞等疗法治疗艾滋病毒，然后我们用聚乙二醇干扰素联合利巴韦林治疗混合感染的丙肝病毒。

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For example, HIV enters cells of the immune system by binding to a receptor called CD4.

比如,HIV通过与CD4的受体结合,进入到免疫系统细胞中

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Two specific types of immune system cell that attack invaders - CD4 T-cells and natural killer cells - increased in number with age, with a higher rate of increase in women than in men.

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This consists of two sugar-protein molecules known as gp120 and gp41 that react with a protein called CD4, which is found on the surface of certain cells of the immune system.

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