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肝脏是机体重要的器官之一，至少承担着５０００种以上的生理功能是其损伤后具有惊人的组织修复与代偿性增生能力即肝再生能力。正常状态下，人肝细胞的平均寿命为２００天以上，每数万个肝细胞才见到一个核分裂，９９．９％以上的肝细胞处于非增殖状态即Ｇ０期。但当肝脏受到损伤时，多数细胞迅速进入增殖状态，损伤的肝组织在短时间即可由再生肝代偿。这一过程主要表现为肝实质细胞、间质细胞及细胞外基质的增生
The liver is one of the important organs of the body, at least bear more than 5000 kinds of physiological function is its damage after an amazing tissue repair and compensatory proliferative capacity of the liver regeneration. Under normal conditions, the average life expectancy of human hepatocytes is more than 200 days, only one mitotic cell is seen in every tens of thousands of hepatocytes, and more than 99.9% of the hepatocytes are in non-proliferative state, ie G0 phase. However, when the liver is damaged, most of the cells rapidly enter the proliferative state, and the damaged liver tissue can be compensated by the regenerative liver in a short time. This process is mainly manifested as liver parenchymal cells, interstitial cells and extracellular matrix proliferation