The bourn of internal root sheath and external root sheath was blurry, the fiber of connective tissue sheath cell arrayed disordered, the number of connective tissue cell reduced.
内根鞘、外根鞘界限模糊，结缔组织性鞘细胞纤维排列杂乱，结缔组织细胞减少。
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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