1.   He replaced the nucleus of a frog egg, one large cell, with that of another cell from another frog.

2.   In cloning, scientists replace the nucleus of an egg with DNA from another cell.

3.   It replaces the nucleus of a human egg cell with the nucleus of a cell from different part of the body to create stem cells.

4.   Scientists could clone animals from those cells by replacing the nucleus of an egg with the nucleus from the genetically engineered cell.

5.   The Korean experiment involved replacing the nucleus of the donated egg cell with the nucleus of an ordinary body cell.

6.   In addition to the egg fluid transfer, the authority claimed by the FDA would cover cloning, and removing and replacing nuclei from eggs.

7.   In cloning, scientists mechanically replace the nucleus of an egg with DNA from another cell.

8.   Instead, it replaces the nuclei of the donated eggs with genetic material from adult cells, and then clones the results.

9.   They then used the nucleus to replace the nucleus of an egg cell which was subsequently injected into the womb of the surrogate mother goat.