Three different groups simultaneously announced that they had converted unipotent, mature skin cells back into an undifferentiated state.

三个不组声称，他们已经将单能性、成熟皮肤细胞反转为无差别状态。

In the embryo an undifferentiated mesodermal component of an early trunk or tail segment or metamere, derived from paraxial mesoderm.

在胚胎，一个无法区别中胚层组成一个早期躯干、或尾部片段或体节，衍生自轴旁中胚层。