英语时差:癌细胞扩散
教程:英语时差  浏览:414  
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    A major reason why many cancers are so dangerous is that they metastasize. This means that instead of staying in one place, the cancer cells migrate from their original site to other parts of the body. It’s no wonder scientists are busy studying the mechanism that enables cells to move around, in hope of finding a way to control this migration. Whether it’s an immune cell going off to battle infection, or a cancer cell making its way to a new area of the body, the underlying mechanism for its movement is the same. All non-blood cells are surrounded by a fibrous material known as the extracellular matrix.Anyway cells on the go use a point-to-point adhesion system, which functions like tiny hooks, to grab the materials that make up the extracellular matrix.
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