Its researchers have turned them into a type of cell that produces the insulating sheath around a nerve cell.

其研究人员已经把干细胞变成了一种在神经细胞周围产生绝缘护套的细胞。

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In the late 1980s a young neuroscientist named Martin Schwab, now a professor at the University of Zurich and the Swiss Federal Institute of Technology, suspected the culprit was the spinal cord's myelin, the insulating sheath that surrounds nerves.

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