How the retroviral env gene has these effects is not clear.

逆转录病毒env基因为何拥有这种作用尚不清楚。

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Although env gene correlates with cell tropism, coreceptor usage and HIV syncytium inducing, it may have relationship with the whole genome, whether these phenotypes are present or not.

虽然HIV外膜基因与毒株的细胞嗜性、受体使用，与介导融合等特性有关，但这些表型的体现与否，还与毒株的整个基因组背景有关。

youdao

Although env gene correlates with cell tropism, coreceptor usage and HIV syncytium inducing, it may have relationship with the whole genome, whether these phenotypes are present or not.

虽然HIV外膜基因与毒株的细胞嗜性、受体使用，与介导融合等特性有关，但这些表型的体现与否，还与毒株的整个基因组背景有关。

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