embryonic cell nuclear transfer

…monkey through a process called embryonic cell nuclear transfer, which is similar to SCNT except that it uses DNA from an undifferentiated embryo. In 2007 macaque monkey embryos were cloned by SCNT, but those clones lived only to the blastocyst stage of embryonic development. It was more than 10 years…

…four cloned lambs by using embryonic cell nuclear transfer, in which the nucleus from an embryonic stem cell was inserted into an enucleated egg. This research led Wilmut and Smith to an important discovery—namely, that the stage of the cell cycle (the sequence through which each cell progresses from one…