From the leaves opposite view, very clearly saw the bulge has come from, a pale green stem roots.

从叶子反面看，可以清清楚楚地看见那凸出来的，一根根淡绿色的茎。

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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

耶鲁公开课 - 生物医学工程探索课程节选

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。

干细胞和伦理 - SpeakingMax英语口语达人

Another therapeutic possibility is giving a patient an IV of stem cells, which would come from a stem cell bank or a company.

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Newsnight has spoken to Stephen Van Rooyen, who has so far declined our offer of an interview on camera and has not confirmed or denied that ACT's stem cells come from AllCells.

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So far, the best stem cells seem to come from human embryos, which are destroyed in the process of removing stem cells.

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