This similarity allows them to escape the stringent identity control mechanisms during protein synthesis and be incorporated into proteins by the unmodified mammalian translation machinery.

这种相似使他们逃过了氨基酸合成过程中严格的识别控制机制，并被未改变的哺乳动物翻译组件合并到蛋白质中。

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The protein on the surface of the virus, called gp120, constantly mutates to escape detection by antibodies.

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On the other hand acquiring this protein too slowly would give the immune system time to launch a response before the virus can escape - killing the virus and preventing infection, they said.

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