去甲麦普替林、活性部分的浓度高于阈浓度时，会增加出现不良反应的可能。
When the concentrations of N-demethylmaprotiline and active moiety are higher than threshold concentration, the possibility of side effects may be increased.
尤其是二氢吡啶作为动物体中重要的还原性辅酶NADH的活性部分更是赋予了二氢吡啶重要的生物学方面的意义。
Their biological significance has been greatly recognized since they are discovered to be the active part of NADH, the essential reducing coenzyme in animals.
原则上，制造某种清除活性氧的产品是容易的，你只需要与它发生反应的某物并中和活性部分，且其本身并不导致任何损害。
In principle it is easy to make something that scavenges reactive oxygen, you just need something to react with it and neutralize that reactive moiety without itself causing any harm.
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