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When a Marine gets hit by a laser beam, his weapon gets de-activated.
VOA: standard.2010.04.06
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Because if it was a neurotransmitter activated ion channel, what would happen when the neurotransmitter bound here?
因为假如这是一个,神经递质激活的离子通道,当神经递质结合于此的时候,会发生些什么呢
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They're sometimes called transcription factors and this is an example of a transcription factor that is itself activated or turned on by the presence of a steroid.
它们被称为转录因子,转录因子的一个例子就是,能够自激活或被激素激活
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When you touch boiling water, for example,get a cut, or even exercise too much, a special receptor on the neuron is activated, sending a signal to the brain - that hurts!.
VOA: standard.2010.05.04
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You can put somebody in an MRI machine now and have them read a book and look at what parts of their brain become activated when they're reading and what parts stop activating when they stop reading, so you can learn where in their brain is reading done.
现在如果有人躺在核磁共振仪中进行阅读,我们就可以看到,在阅读时,大脑哪些部位变得活跃,停止阅读时哪些部位停止活动,这样我们就知道了,大脑中什么部位是和阅读相关的
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It took several years of further experiments and analysis, but During and his colleagues ultimately concluded that the mild stress of all that activity and interaction activated a communication channel that prompts fat cells to stop releasing a hormone called leptin, which accelerates cancer growth.
VOA: standard.2010.07.14
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One of the results of that stimulation is that B-cells - a particular subset of B-cells - gets activated.
这种激活的结果之一就是,B细胞,一类特别的B细胞亚族被激活
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They come from B-cells, they come from B-cells that are activated with a specific antigen.
抗体来自于B细胞,它们来自于被特别的抗原所激活的B细胞
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When a certain enzyme is activated inside cells, ATP gets converted into a molecule called cyclic AMP, and cyclic AMP is an example of one of these molecules called second messengers.
细胞内的某种酶被激活后,ATP就能转化为一种叫cAMP的分子,cAMP是一种第二信使分子的范例
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