Scientists can make undifferentiated stem cells from skin cells.

科学家可以从皮肤细胞中制造未分化的干细胞。

Each one comes from an undifferentiated stem cell, which is a cell that can develop into any tissue in the body, from bone to brain.

每一个都来自未分化的干细胞，这种细胞可以发育成身体的任何组织，从骨骼到大脑。