That's where they all come from, they all come from the zygote The word for that is totipotent, totally potent.

这是干细胞的来源,都来源于受精卵,这种细胞称为全能干细胞,具备全部潜能

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This stem cell which is reproduced still has the potential to undergo asymmetric division but this one does not.

新生成的干细胞,仍然有潜能进行不对称分裂,但定向祖细胞就不行

耶鲁公开课 - 生物医学工程探索课程节选

Those are called embryonic stem cells, they are self-renewing, and they are pluripotent, meaning they have many potencies.

这些称为胚胎干细胞,它们可以自我更新,且是多能干细胞,即它们有多种潜能

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So they've lost some capabilities but not many, and these are called multipotent stem cells.

它们失去了一些潜能,但不是很多,所以这些还是称为多能干细胞

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They might self-renew they might not, they have much more limited potential than before.

它们也许能自我更新,也许不能,它们比之前的干细胞潜能更少

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One way of referring to this cell is in terms of its potential and the zygote obviously has the potential of becoming all of the cells of our body.

干细胞的一个特点,就是它有分化潜能,而受精卵,显然有变成我们体内任何细胞的潜能

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Another concept that's important in thinking about stem cells is potential.

另一个需要重点考虑的概念,就是干细胞的潜能

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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

耶鲁公开课 - 生物医学工程探索课程节选