There's a lot of interest in bone marrow and the stem cells that come from bone marrow and there's a couple of reasons for this.

人们对骨髓以及从骨髓中,提取的干细胞有着浓厚的兴趣,这其中有多种原因

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is that the, like the best stem cells come from human embryos.

是因为最好的干细胞来自于人类的胚胎。

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