另外研究血管内皮生长因子(VEGF)和传代培养对细胞分化、扩增动力学和细胞凋亡的影响。

In addition, we tested the effect of vessel endothelial growth factor (VEGF) and passage on cell differentiation, expansion kinetics and apoptosis.

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结果显示：LOOH和CD两个指标动力学变化相似，呈现延滞期、扩增期和下降期三个时相。

These results indicated that kinetic changes of LOOH and CD showed three different phases: lag, propagation and decomposition phases;

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