英语翻译Here’s another analogy:If DNA is the blueprint for prote

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英语翻译
Here’s another analogy:If DNA is the blueprint for proteins,RNA is the contractor.It makes single-stranded copies of DNA’s genes,called mRNA,which tell the cell to produce proteins.In 1998,scientists identified RNAi,a mechanism that primitive organisms use to detect and destroy virus’s double-stranded RNA and any viral mRNA.Mammals’ immune systems made RNAi’s antiviral function irrelevant (although all vertebrates,including humans,still use RNAi to regulate mRNA activity),but researchers found that introducing small segments of double-stranded RNA to cells could trigger the ancient mechanism and selectively halt the production of specific proteins.

以下是另外一个比喻,如果DNA是做蛋白质的蓝图,那RNA就是承包商（制造者）.RNA由DNA的基因制造单链的复制品,叫做mRNA,信使核糖核酸告诉细胞要生产蛋白质.1998年,科学家研发了核糖核酸干扰,一个原始生物用来发现及摧毁病毒双链RNA和其他mRNA的机构.哺乳动物的免疫系统把核糖核酸干扰的反-病毒功能淘汰了（但是脊椎动物,包括人类,还在用核糖核酸干扰来调节mRNA运作）.研究人员发现将小段的双链核糖核酸加入在细胞里面可以激发那古老的机构,然后选择性地阻止某些蛋白质的生成.
手翻,还是我感兴趣才帮你翻这东西,好在我还学过,不然什么时候才翻完啊.

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