目的：研究淫羊藿、枸杞子对老年大鼠线粒体DNA缺失、线粒体呼吸链酶复合体及AT P合成的影响。

Objective: to investigate the effect of Herba Epimedii and Fructus Lyci I on mitochondrial DNA deletion, activity of respiratory chain enzyme complexes and ATP synthesis.

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方法：采用链酶亲和素-过氧化物酶标记免疫组织化学方法，在PC NA阳性标本中测定增殖指数(PI)。

Methods the PCNA index (PI) was detected by the immunohistochemistry method of streptavidin in the PCNA positive samples.

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目的是研究曼氏裂头蚴蛋白分解酶结合糖链的构成。

The objective is to study the construction of the glucoside chain of Spirometra erinaseienroaei plerocercoid protease.

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You then denature again, each one of these strands gets separated, primers bind, turn on the polymerase, a new strand is made.

然后你可以再次使产物链变性,使各链解旋,再结合引物,激活聚合酶,再生成新链

耶鲁公开课 - 生物医学工程探索课程节选

In this case, this particular restriction enzyme cuts symmetrically like this, but not at the same point.

在我们这种情况下,这个限制性内切酶总是这样对称地切割,但两条链切割的位点不一样

耶鲁公开课 - 生物医学工程探索课程节选

You first separated your DNA, let the primers bind, then turn on the enzyme, and it makes copies of each one of these.

首先解旋DNA双链,使引物结合,接着激活聚合酶,最终得到各链的复制产物

耶鲁公开课 - 生物医学工程探索课程节选