来自《耶鲁大学开放课程：生物医学工程探索 第6集 第6集》

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  and nurturing it in such a way that it gains potentials
  通过特定的培养方法之后
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  that it didn't have necessarily when it was in the body,
  它们会获得在体内不能获得的潜能
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  or exploiting those potentials that it wouldn't necessarily express.
  或者开拓一些在体内不能得到表达的潜能
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  That's a lot of what stem cell biology is like - is about.
  干细胞生物学的著作有很多
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  This diagram here sort of allows me to walk you through
  这张图让我能跟你们一起
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  some of the terminology of this stem cell development
  走马观花地看看干细胞发展中的术语
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  and talk about these concepts.
  探讨一下这些概念
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  Again, in the context of a specific tissue site,
  当然又是放在某种组织当中来说
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  in this case it's the nervous system.
  这次是在神经系统
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  We started the discussion talking about
  我们是从
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  the zygote or the fertilized egg.
  受精卵或者受精卵子说起的
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  There's only one source for that,
  它的来源只有一个