21.   The researchers removed the nucleus from cat eggs and fused the eggs with cumulus cells.

22.   Then they removed the nucleus from a mouse egg and replaced it with a nucleus from one of the skin cells.

23.   Then they removed the nucleus from an egg and replaced it with the nucleus from the genetically altered cell.

24.   They removed its nucleus and replaced it with a cumulus cell, complete with its genetic DNA.

25.   They then removed the nucleus from a mouse egg and replaced it with the genes from the adult mouse cell.

26.   They also took unfertilized sheep eggs and removed the nucleus, the control room that contains the genes.

27.   They removed the nucleus, which contains DNA, and injected it into a pig egg from which the nucleus had been removed.