Thanks for your help Ryan. sorry if it was a little confusing, it's baffling me too! It is in relation to Dolly the sheep. When she was cloned, they removed the nucleus of an udder cell and "had to find a way of 'reprogramming' the udder cells - to keep them alive but stop them from growing - which they achieved by altering the growth medium." They then injected the cell into an unfertilised egg cell which had had its nucleus removed.
I need to find out the term used to describe this 'reprogramming'.
Any ideas??