During development of the embryo it goes from being a single cell, the fertilized egg, to being a multi-cellular organism with billions of cells in it.
胚胎的发育,始于一个单一细胞,即受精卵,直到形成一个以十亿计数量的细胞构成的,多细胞有机体
生物医学工程探索课程节选 : 耶鲁公开课
2
The zygote or this fertilized egg is a completely undifferentiated cell.
受精卵,或者说已受精的卵子,是一个完全未分化的细胞
生物医学工程探索课程节选 : 耶鲁公开课
3
The cell is a fertilized egg, so you take a fertilized egg and you directly inject plasma DNA into the pronucleus, into one of the pronucleus--pronuclei.