Adenosine then binds to more and more sites on cells in certain areas of the brain, as the total amount released gradually increases during wakefulness.

当腺苷在清醒状态下释放的总量逐渐增加时，腺苷就会与大脑特定区域越来越多的细胞结合。

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The signaling in a plant is only superficially similar to the firing in a complex animal brain, which is more than "a mass of cells that communicate by electricity," Taiz said.

植物内部发出的电信号与动物复杂的大脑中发出的神经信号只是表面上相似，动物大脑不仅仅是“通过电信号交流的细胞群”，塔伊兹说道。

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Changes in brain cells can affect communication between different regions of the brain.

脑细胞的变化会影响大脑不同区域之间的交流。

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Nothing happened when they turned on the light in cells in an area of the brain called the subthalamic nucleus.

VOA: special.2009.04.07

When cells become more like cells of the mature brain they're said to differentiate into brain cells.

当细胞变得越来越像成熟的脑细胞的时候,我们就称其为分化成了脑细胞

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We have tissues like the brain which are assembled to do functions that are different from any other groups of cells in the body.

像我们的脑组织,它们的功能,就截然不同于身体其他部分的细胞功能

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However, he said that embryonic stem cells remained the most obvious source of cells for such transplants, as foetal tissue - used in some experiments - was scarce, and so-called "adult stem cells" had never been converted into the right type of brain cells, despite 15 years of research.

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The more stem cells present, the more virulently the tumor grows:They account for 1 in 4 cells in a glioblastoma tumor, the deadliest type of brain cancer, but only 1 in 500 cells in slower-growing forms of brain cancer, Dirks found.

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The next step was to transform the stem cells into immature versions of cells in the brain that produce myelin.

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