And if you maintained it in the right way, this polymer scaffold together with the skin cells will grow into skin.

如果培养方法得当,这个聚合物支架与这些皮肤细胞,会融合形成皮肤

耶鲁公开课 - 生物医学工程探索课程节选

Here's a way that you can do it in a test tube without using any cells by this process called Polymerase Chain Reaction.

但有一个方法可以让你在试管中完成,不用细胞,这个方法叫聚合酶链式反应

耶鲁公开课 - 生物医学工程探索课程节选