Cells
Human embryonic stem (ES) cells
- Cell nuclear replacement (CNR) involves removing the nucleus of a
human egg cell and replacing it with the nucleus from a human body
cell, such as a skin cell
- The egg is then artificially stimulated
- This causes the egg to divide and behave in a similar way to a standard embryo fertilised by sperm
- The eggs used are left over from IVF treatment
Image source:http://www.genetics-and-society.org/technologies/cloning/researchscience.html