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。

The mother can inherit fetal stem cells, undifferentiated cells that are able to develop into any specialized cell.

母亲可以继承胎儿干细胞，即能够发育成任何特化细胞的未分化细胞。

There are three types of neuroblastomas, and they're categorized based on the size and shape of the tumor cells: undifferentiated, poorly differentiated, and differentiating neuroblastoma.

神经母细胞瘤有三种类型，是基于肿瘤细胞的大小和形状分类为未分化型、分化不良型和分化型神经母细胞瘤。

Some brain cells have a limited ability to be replaced, especially during injury, and they do it by having undifferentiated stem cells - called embryonic stem cells - in the brain activate and mature into a specialized cell.

一些脑细胞拥有有限的再生功能，特别是在损伤时——由一种未分化的干细胞——胚胎干细胞在大脑中激活并分化成某种专门细胞。