从结构来看，RNA是单链结构。
线粒体DNA不同步的D环复制形式导致了控制区局部形成三链结构，其单链的构造使其更易受到过氧化物的损害。
Second, it has a triple strand DNA architecture generated by the synthesis of a short piece of the H strand which is highly sensitive to oxidative damage due to its single strand condition.
线粒体DNA不同步的D环复制形式导致了控制区局部形成三链结构，其单链的构造使其更易受到过氧化物的损害。
Second, it has a triple strand DNA architecture generated by the synthesis of a short piece of the H strand which is highly sensitive to oxidative damage due to its single strand condition.
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