来自《耶鲁大学开放课程：生物医学工程探索 第24集 第24集》
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Many people think if you could block许多人认为如果你能够 -
that process selectively in tumors在肿瘤中选择性地阻止这个过程 -
then you could halt all tumors to a very small size那么你就能将所有肿瘤限制在很小的尺寸 -
that would not cause problems.那样就不会引起什么问题 -
An additional stage after angiogenesis that在血管再生以后的一个另外的阶段 -
some tumors can go through is a process called metastasis.一些肿瘤会转移 -
That's where tumor cells actually leave their site of origin事实上就是肿瘤细胞离开了原先的位置 -
and travel to other places in the body.而转移到了身体的其他部位 -
That's shown schematically in this cartoon here.在这个动画里展示了这个过程 -
A tumor cell entering the circulation,一个肿瘤细胞进入血液循环 -
it can flow through the circulation,它能够在血液循环中流动 -
and maybe get lodged at some distant site也许它会着落在较远的位置