Again, the point today is not for you to understand in detail all these mechanisms but to understand how those basic concepts we talked about last time, basic concepts of cell communication if arranged in the right kinds of ways can lead to complex outcomes.

再说一次 今天的重点不是,要你理解这些机制的细节,而是借此理解上节课讲的基本概念,细胞通讯的基本概念如果安排得当,可以产生非常复杂的反应

耶鲁公开课 - 生物医学工程探索课程节选

At this stage the structure, though still just a featureless ball of cells, has started to differentiate into the body's three basic cell types (known as endoderm, mesoderm and ectoderm).

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Regardless, many people are so attached to these devices that people were completely outraged when BlackBerry experienced system outages in October 2011, despite the fact that their basic cell phone services were still operational.

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Vitamin D works inside the cell nucleus as a basic building block to help turn genes on or off.

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