Different chords become the various cell types, and all the notes have to be played perfectly to produce a healthy human being.

不同的和弦成为各种细胞类型，必须完美弹奏所有的音符，才能制造出一个健康的人。

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For a decade, scientists have been trying to decipher what they call the human "epigenome", or the pattern of chemical switches in all 200 types of human cell.

十年来，科学家一直在试图破解他们所称为的人类“表观基因组”，即所有200种人类细胞中的化学开关模式。

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Human eyes have three cone cell types, with each type dedicated to receiving either blue, green or red light.

人类拥有三种视锥细胞，每种细胞都有各自的用途，可用于接收蓝色光、绿色光或红色光。

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Professor Azim Surani, of the University of Cambridge, said the research should allow scientists to create a large range of human stem cell types, which could prove invaluable in studying disease.

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Embryonic stem cells have great potential for treating human disease because of their ability to generate almost all the cell types found in the adult body.

BBC: NEWS | Health | 'This is a very exciting advance'