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In March, President Obama ended restrictions on the use of federal money for research using human embryonic stem cells.
VOA: special.2009.04.07
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This process is called self-renewal, so that's one important process of property stem cells, that they're capable of self-renewal.
这种过程称为自我更新,所以这是干细胞的一个重要性质,它们能够自我更新
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So probably the, the most common example of Bio-Engineering is stem cell research,
可能最常见的生物工程案例就是干细胞的研究了，
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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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The disease is a form of stem rust named for its discovery in Uganda ten years ago.
VOA: special.2009.08.18
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Israel's acceptance of a relationship with God doesn't stem from mystical introspection, or philosophical speculation, Levenson says.
犹太人接受与上帝的关系并不来自于,神秘的内省，或者是出于投机心理，Levenson说。
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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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All the goods of civilization, Hobbes tells us, stem from our ability to control pride.
霍布斯告诉我们说，文明之所以文明，源自于我们对追求荣誉之心的克制。
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Straw is the dried stem part of plants such as wheat, millet and sorghum.
VOA: special.2009.01.12
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The other pathway that I think is very promising is now to use stem cell generated cells in culture dishes to use them for high throughput drug screening now we can test thousands of different drugs without killing so many animals.
第二个目标的前景相当广阔,我们可以用干细胞,在培养皿中大量繁殖各种细胞,用于大剂量的药物试验,让你无需屠戮动物,就能进行各种药物试验。
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The world's last major outbreak of stem rust took place in the nineteen fifties.
VOA: special.2009.08.18
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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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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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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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The disappearance of cancer stem cells,then, is important for cancer control.
VOA: special.2010.06.01
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This is one of the very important areas that still is not completely understood in stem cell biology.
这是一个干细胞生物学领域的重要课题,至今仍未完全明确
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Stem rust produces reddish-brown spots on the stems of infected plants.
VOA: special.2009.08.18
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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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The mixture caused the number of stem cells to decrease.
VOA: special.2010.06.01
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This diagram here sort of allows me to walk you through some of the terminology of this stem cell development and talk about these concepts.
这张图让我能跟你们一起,走马观花地看看干细胞发展中的术语,探讨一下这些概念
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(SAYING...) Nearly two-thirds of those polled said women and minorities in STEM careers were under-represented in their companies or institutions.
VOA: standard.2010.03.26
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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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The government has even explored the possibility of closing schools to stem the spread of the virus.
VOA: standard.2009.07.31
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That's a lot of what stem cell biology is like - is about.
干细胞生物学的著作有很多
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"This is a new strain of stem rust organism that has the power to destroy most of the wheat varieties being grown around the world."
VOA: standard.2009.09.16
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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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And until BP finds a way to stem the flow, no one can estimate the full effect of this disaster on BP, its shareholders,or employees.
VOA: standard.2010.06.18
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It's no longer capable of self-renewal to form another stem cell.
不再能自我更新,从而生成另一个干细胞了
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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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