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But she says it must be shown scientifically that cord blood stem cells cause improvement, and not other reasons.
VOA: special.2011.02.01
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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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stem cell researchers have found a way to get perfectly usable stem cells from fully grown human beings.
干细胞研究者已经找到了一种方法，
可以从成年人身上获取可用的干细胞。
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Last year,President Obama ended restrictions on the use of federal money for studies of human embryonic stem cells.
VOA: special.2010.11.02
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That's why people are so excited about embryonic stem cells because in nature they become all the cells of the body.
这就是为什么胚胎干细胞如此让人激动,因为它的天然功能就是变成所有身体细胞
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Doctor Kakarala says the cancer-fighting treatments known as chemotherapy do not control tumors containing cancer stem cells.
VOA: special.2010.06.01
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The way we did this was to coax embryonic stem cells first to develop into the surface layer.
我们是这么做的,先诱导胚胎干细胞,发育成外胚层。
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Stem cells have the ability to grow other cells, such as heart, nerve or brain cells.
VOA: special.2010.06.15
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People are saying stem cells are basically going to be the new miracle drug.
人们常说干细胞将会是新的救命的奇药。
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During an infusion, stem cells enter the body through a vein leading back to the heart.
VOA: special.2011.02.01
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And unfortunately, in order to get those stem cells, that requires killing the embryo.
而不幸的是，要想得到这些干细胞，就需要杀死胚胎。
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Stem cells from very early embryos are able to grow into any tissue in the body.
VOA: special.2009.04.07
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That's important because one of the attributes of stem cells is that they remain at their site and capable of reproducing themselves.
这非常重要,因为干细胞的性质之一,就是它们能维持自身的状态,并能进行再分裂
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For example, some scientists hope to use stem cells to replace tissues damaged by disease.
VOA: special.2009.04.14
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There's a lot of interest in obtaining stem cells from the blood of the umbilical cord on birth.
从出生时的脐带血中取得一些干细胞,也很有趣
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He heads the first-ever clinical trial of umbilical cord stem cells with cerebral palsy patients.
VOA: special.2011.02.01
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Pluripotent stem cells that are capable of self-renewal to generate themselves and are capable of dividing into both bioloid and lymphoid progenitor cells.
多能干细胞,是能够通过自我更新进行自我生成的细胞,也能分化成髓系祖细胞,或者淋巴祖细胞
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For example,some scientists hope to use stem cells to replace tissues damaged by disease.
VOA: special.2010.06.15
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So they've lost some capabilities but not many, and these are called multipotent stem cells.
它们失去了一些潜能,但不是很多,所以这些还是称为多能干细胞
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The doctor also says researchers could be able to limit the number of cells that can form tumors if they limit the number of normal stem cells.
VOA: special.2010.06.01
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The other is that it's possible to get stem cells from patients, from bone marrow.
另外一个原因就是从病人的骨髓中,取得干细胞是可行的
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The disappearance of cancer stem cells,then, is important for cancer control.
VOA: special.2010.06.01
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One of the differences in stem cell populations that you will hear about is you hear about embryonic stem cells and you hear about adult stem cells.
干细胞之间的一个区别,你可能听说过的,那就是既有胚胎干细胞,也有成人干细胞
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The mixture caused the number of stem cells to decrease.
VOA: special.2010.06.01
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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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Cancer stem cells are found inside tumors.
VOA: special.2010.06.01
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We were looking for the mouse cells the mouse embryonic stem cells that we had coaxed into early ear cells whether they were able to form ear cells.
再来看看那些经诱导,发育成早期耳细胞的,老鼠胚胎干细胞,能否发育成耳细胞。
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In order to attract the rabbit's own stem cells to re-grow the cartilage, channels in the scaffold were filled with a growth factor protein.
VOA: standard.2010.08.11
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Adult stem cells are acquired in some fashion from an adult organism.
成人干细胞是用某些方式,从成人体内提取的
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We're going to talk about different kinds of stem cells.
我们会提到不同种类的干细胞
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