So this stem cell division leads to another stem cell as well as a committed progenitor cell.

这种细胞分化不仅产生一个定向祖细胞,还会产生另一个干细胞

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The result is a cell that's very similar but it is - very similar to the progenitor cell but it's exactly the stem cell.

另一个结果就是产生一个,很像祖细胞的细胞,但却是如假包换的干细胞

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It's no longer a stem cell but it's a progenitor cell.

它不再是干细胞而是祖细胞

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Potential refers to what it sounds like, 'what potential does this committed progenitor cell have?' 'What potential does this stem cell have?' Well, one way to think about is that upon this first division, this asymmetric division, this committed progenitor cell has lost some potential.

这个"潜能"和字面意思相同,定向祖细胞的潜能是什么,干细胞的潜能又是什么,一种看法就是在第一次分化时,即不对称分裂时,定向祖细胞失去了一些潜能

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