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The Royal Swedish Academy says the DNA in cells contains the designs for how people, plants and bacteria look and operate.
VOA: special.2009.12.08
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They're everywhere in cells throughout your body and they are responsible for lots of the biochemistry of cell/cell interaction and signaling.
它们在身体各处的细胞中都有,并负责很多细胞间的相互作用,及信号转导的生化过程
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Retroviruses, for example, can only insert - can only transduce and express their DNA in cells that are dividing.
就以逆转录病毒为例,它们只能在分裂阶段的细胞里,转导并表达自己的基因
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But if there were nothing beyond the DNA in cells, life could not exist.
VOA: special.2009.12.08
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And this means that the yellow cells on the right side are mouse hair cells in a chicken inner ear.
也就是说，右边黄色部分,代表的是小鸡内耳中的老鼠细胞。
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She says the picorna-like viruses seize control of the ribosome in cells.
VOA: special.2009.09.22
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So, people are talking about the use of hydrogen in fuel cells.
人们在讨论,如何把氢用在燃料电池中。
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She says the picorna-like viruses "hijack" the ribosome in cells.
VOA: special.2009.09.15
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What's changing along here is the what's changing along this pathway is the expression pattern of genes in cells.
因此这里改变的是,在这条途径上改变的是,基因表达的模式
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VOA: special.2010.07.20
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Some of those differences in cells are obvious if you look at the cells in an adult organism.
你留心观察某个成年的生物,就会发现某些细胞分化极其明显
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Working at the leading edge of research on cellular biology and genetic skin disorders, Fuchs was the first to precisely describe keratins - the principal structural proteins of skin cells - and identify diseases caused by mutations in the keratin gene.
VOA: standard.2010.03.29
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We'll talk about cell culture engineering during Week 4, how do you maintain cells in culture, what are the limits of this.
第四周我们会探讨细胞培养工程,人们如何在培养基中维持细胞的存活,这种方法的局限性是什么
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At the same time,though, the two scientists found that the protein can also support the growth of cancer in some cells.
VOA: special.2010.05.18
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It indicates how information flows in cells and indicates a lot about the work that a cell does in maintaining and recreating itself, and maintaining its environment.
这个图展示了信息如何在细胞内传递,以及细胞,在维持 复制自身,和维持其周围环境所需起的作用
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The researchers say the bacteria were grouped together in a thin, but sticky area of cells on the inside of showerheads.
VOA: special.2009.10.13
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I want to illustrate one of the reasons why it has been so difficult to get a grasp on the hair cells in the inner ear.
我想用图例为大家说明一下,为什么难以捕获内耳中的毛细胞。
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It gets worse over time. The disease affects a small area of cells in the middle of the brain.
VOA: special.2009.04.07
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They found that certain cells, in particular, epithelial cells from monkey kidneys, were very effective at propagating the virus.
他们发现有些细胞,尤其是在猴肾脏的上皮细胞中,这种病毒能够有效地增殖
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They are being honored for their work in the nineteen eighties about the health of cells and the aging process.
VOA: special.2009.10.07
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Now, one of the great hopes of modern biology is that we can figure out how to reverse that process in cells.
如今,现代生物学的一个最大希望,就是希望能够,发现逆转分化过程的方法
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Doctors and scientists have identified at least eighty other diseases in which the body attacks its own organs and cells.
VOA: special.2010.06.15
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In this same way, this process of transcription which is occurring in cells throughout body all the time is made possible by a protein called RNA polymerase.
NA的合成也很类似,身体内每个细胞内,转录过程的进行都是在一种称作,RNA聚合酶的蛋白质催化下进行的
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If you travel by bus in Sao Paulo,Brazil these days your vehicle may be powered by hydrogen fuel cells.
VOA: special.2009.09.07
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Adrenaline is another one, produced by cells in your adrenal gland but used by cells all over your body.
肾上腺素是另一个例子,肾上腺素由肾上腺细胞分泌,但全身各处的细胞都能利用它
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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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All these cells come from the bone marrow and biologists have traced the formation of these cells in great detail.
所有这些细胞都来自骨髓,而生物学家已经很详细地,研究了这些细胞的形成过程
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He says normally a protein in healthy immune cells causes the cells to die after they attack an invading virus or bacteria.
VOA: special.2010.05.19
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Like many cells in neurons, the shape of the cell is intimately related to its function within the organism.
同许多种神经细胞一样,这个细胞的形状和,它们在生物体中执行的功能紧密相关
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So, they don't start killing all the cells in your respiratory system; they only kill the cells that are harboring the virus.
所以它们不会杀死所有呼吸系统内的细胞,只杀死那些被病毒感染的细胞
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