The disease is a form of stem rust named for its discovery in Uganda ten years ago.
VOA: special.2009.08.18
This pluripotent stem cell from bone marrow is an example of a stem cell, an adult stem cell, a stem cell that could be identified from the blood.
这种骨髓中的多能干细胞,是干细胞的一个代表,一个成人的干细胞,可以在血液中检测到的
So the idea is, if you can take a cell... you can take a stem cell from your body
所以如果你能够取得一个细胞……如果你能够从你体内取得一个干细胞,
The common or purple foxglove produces pretty flowers along a tall leafy stem called a spike.
VOA: special.2009.08.25
It's no longer a stem cell but it's a progenitor cell.
它不再是干细胞而是祖细胞
During an infusion, stem cells enter the body through a vein leading back to the heart.
VOA: special.2011.02.01
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。
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
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。
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
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。
Researchers say the speech impediment appears to stem from a defectin the gene that regulates the way brain cells break down and recycle waste products.
VOA: standard.2010.02.11
And this diagram shows what I simply labeled as a stem cell, so I'm not referring to any particular kind of stem cell now, but just a cell that has the stem cell character.
这张图示内容我就简单地标注为干细胞,现在我提到的干细胞不是特指哪种干细胞,而是指拥有干细胞特征的细胞
"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
A capability for asymmetric division and the production of cells that become differentiating more mature cells, those are properties of stem cells.
能够完成不对称分裂,以及产生细胞,并分化成为一些更成熟的细胞,这些是干细胞的性质
"But a baby who has a defect in those brain stem circuits that use serotonin can't do that when challenged and they go on to die."
VOA: standard.2010.02.08
So this stem cell division leads to another stem cell as well as a committed progenitor cell.
这种细胞分化不仅产生一个定向祖细胞,还会产生另一个干细胞
European countries have been trying to stem the tide of a near financial meltdown that started in Greece, but is now threatening to engulf other heavily indebted countries.
VOA: standard.2010.05.26
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
Spats within the opposition stem largely from ideological differences among the three opposition parties which consist of a conservative Islamic group that caters to the Malay Muslim majority;
VOA: standard.2009.12.21
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
These replacement joints can be made of combinations of metal alloys, plastic and ceramic, but new research shows that it might be possible to regenerate damaged joints using a patient's own stem cells.
VOA: standard.2010.08.11
It's also an example of a tissue specific stem cell.
这同时也是一个组织特异性干细胞的例子
We have a big job on our hands,". Borlaug expressed concern about a new variety of wheat stem rust attacking wheat plants in Africa and advocated greater coordination of researchers around the world to stop its spread.
VOA: standard.2009.09.13
That's a lot of the literature of stem cells that you'll read about, taking a particular source of stem cell and nurturing it in such a way that it gains potentials that it didn't have necessarily when it was in the body, or exploiting those potentials that it wouldn't necessarily express.
现在你可以找到很多,有关干细胞的文献中讲到,提取一种特定来源的干细胞,通过特定的培养方法之后,它们会获得在体内不能获得的潜能,或者开拓一些在体内不能得到表达的潜能
At a similar gathering last year, members of the so-called G20 set of advanced economies agreed on emergency spending to stem a global crisis brought on by the collapse of U.S.investment bank Lehman Brothers in late 2008.
VOA: standard.2010.06.05
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
That's been looking at blood stem cells has been a very fruitful way to look for that.
在血液干细胞的研究中,看起来是个有前途的路子
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
We'll talk in a minute about stem cells that are involved in generation of blood and they develop and they live in the bone marrow.
我们一会儿要说到,和血细胞再生有关的干细胞,它们发育并储存在骨髓中
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