Well, one way would be to isolate individual cells and culture them outside the body and see what they become.

一个方法就是分离单独的细胞,然后进行体外培养看看结果

耶鲁公开课 - 生物医学工程探索课程节选

Generally, there are a couple of elements that one might set down as in a Petri dish, and wait to see if some chemical reaction might take place, but not at all sure of what it might be.

一般来说，都有几个元素,作者会把它们像放入培养基中一样培养,等待某种化学反应的产生，但对可能的结果却一无所知。

普林斯顿公开课 - 人性课程节选