来自《耶鲁大学开放课程：生物医学工程探索第23集第23集》

and get them to reform blood vessels inside the patient.

令它们在病人体内重建血管
The way that this is done is that

做到这一点的方法就是
these cells are suspended in a three-dimensional gel.

将这些细胞悬浮在三维凝胶中
This is a gel of collagen and

这种是胶原凝胶
it looks just like this scanning electron micrograph.

它看起来很像扫描电镜
On the side, if you looked at very high magnification,

在这一侧如果你用很高的分辨率来观察
it's just a web or a network of protein fibers

它只是由蛋白纤维交织而成的网络
formed from the natural protein collagen.

这些蛋白纤维源于天然的蛋白胶原
We talked about collagen's

我们之前讲细胞外基质时
role in the extracellular matrix earlier.

讲过胶原的作用
Here, this is isolated collagen, purified,

在这里这是分离并纯化后的胶原
and then formed into a gel, and cells are suspended within it.

用它成制凝胶细胞悬浮在其中