Embryonic stem cells are the source of every cell, tissue and organ in the body.

身体中的每一个细胞，组织和器官都来源于胚性干细胞。

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So we needed to come up with another source, a renewable source, so we turned our attention to embryonic stem cells.

因此，我们需要一种替代材料，一种可以再生的材料，我们注意到了胚胎干细胞胚胎干细胞。

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The bone marrow was the source of the stem cells that made the procedure newsworthy.

骨髓是干细胞的来源，并使得这一过程有报导价值。

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So we needed to come up with another source, a renewable source, so we turned our attention to embryonic stem cells.

因此，我们需要一种替代材料，一种可以再生的材料，我们注意到了胚胎干细胞胚胎干细胞。

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It turns out that blood within the umbilical cord is also a rich source of stem cells and again specific to a particular patient.

研究发现脐带血中,也有丰富的干细胞资源,并且对一些特殊的病人有特别的意义

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It's this - its cells in this region here, this inner cell mass that that's the source of embryonic stem cells, cells from inner cell mass here.

就是这个,在这片区域的胚胎细胞,即内细胞群,而胚胎干细胞的来源所在,就是源自这里的内细胞群

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However, he said that embryonic stem cells remained the most obvious source of cells for such transplants, as foetal tissue - used in some experiments - was scarce, and so-called "adult stem cells" had never been converted into the right type of brain cells, despite 15 years of research.

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Thus far, iPS cells have been a less controversial and more acceptable source of stem cells for conservative politicians to promote.

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The issue of cloning and embryonic stem cell research intersect when it comes to possible uses of cloned tissue as a source of stem cells.

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