这个过程是一个身体增长和愈合能力正常功能的一部分，而肿瘤从良性向恶性转变也是通过血管生成。
Although this process is a normal part of the body's ability to grow and heal itself, angiogenesis is also the path through which tumors transition from benign to malignant.
在创伤愈合过程中细胞的增殖和胶原代谢失常起着至关重要的作用。
Cell proliferation-promoting and collagenic supersession play an essential role not normally in the course of healing in wound.
目的：观察雌激素对骨折愈合过程超微结构变化和骨生长因子骨形态发生蛋白4基因表达及定位分布的影响。
OBJECTIVE to probe into the effect of estrogen on bone microstructure and bone morphogenetic protein-4 mRNA expression and location during fracture healing.
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