Teruhiko Wakayama a genetic scientist from the RIKEN Center for Developmental Biology in Kobe, Japan led a team in a special mice cloning project that involved cloning mice that had been frozen for 16 years. The reason this is such a breakthrough is because this opens up the possibility of being able to clone long since extinct animals. The way this cloning process is done is by injecting the nucleus of a thawed out dead mouse tissue cell into a mouse egg with its nucleus removed. During their experiment the Wakayama team found that the easiest way to close the mice was by using some brain tissue this is quite a remarkable discovery as brain tissue has never been used for cloning. According to Wakayama freezing and thawing the tissue cells is the most effective way to clone the mice as it allows for an easy ‘reprogramming’ of the brain cell nucleus.
George Lukin
http://www.newscientist.com/article/dn15111-cloning-resurrects-longdead-mice.html
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