A Simple Key For stem cell Unveiled
The zygote, which can be the cell ensuing in the fertilization of an oocyte by a spermatozoon, is totipotent. Various successive cell divisions create the morula, with 32–sixty four totipotent cells. Following that stage, it develops into your blastocyst, which is made of a hollow ball of cells. Peripheral cells (the trophoblast) of your blastocy