Background: Actiation of polymorphonuclear neutrophils (PMN) is a critical eent leading to host tissue injury and organ damage after trauma.

背景：创伤后多形核白细胞(PMN)激活是导致宿主组织损害和器官损伤的关键步骤。

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For most organs there is a critical period during development when a system or organ has to mature.

对于大部分器官来说，当一个系统或器官要发育成型时，在发育的阶段都有一个关键时期。

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Cytomicrosome is the center of energy and metabolism of eukaryon. It is also a cellular organ with the critical adjusting function in processes of apoptosis signal.

线粒体是真核生物能量和代谢的中心，也是在细胞凋亡、信号转导中起关键调节作用的细胞器。

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