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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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In fact, there are differences that can be detected upon the first cell division where this zygote divides through the process of mitosis.
事实上,受精卵在进行,第一次有丝分裂时,就会产生差异
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It's not self-renewing, in that division of the zygote results in two daughter cells that are no longer the zygote anymore, they're down some pathway.
它是不会自我更新的,受精卵分裂后成了两个子细胞,而这两个子细胞就不再是受精卵了,它们沿着某种路径进行了分化
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We started the discussion talking about the zygote or the fertilized egg.
我们是从,受精卵或者受精卵子说起的
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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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The zygote or this fertilized egg is a completely undifferentiated cell.
受精卵,或者说已受精的卵子,是一个完全未分化的细胞
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Cells that are within the region that becomes the nervous system become less like the zygote and more like the cells of our brain, neurons and glia, and cells of the mature brain.
位于神经发育区中的细胞,变得越来越不像受精卵,而像脑细胞,神经细胞或神经胶质细胞等等,这些成熟的脑组织中细胞
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The result of fertilization now is a new cell that is the union of the sperm and the egg, and it's called the zygote and it contains the diploid number of chromosomes, genes.
受精就是产生,一个精卵结合的新细胞,称为受精卵,它含有二倍体的染色体基因
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