Mammoth Clones Coming... Maybe

Japanese scientists have produced clones of mice that have been dead and frozen for 16 years -- a feat that could lead researchers to one day resurrect long-extinct species, such as the mammoth.  Until now, scientists have only been able to produce clones using cells from live animals. This is how researchers created Dolly the Sheep, the first mammal to be cloned from an adult animal.  Researchers had thought that frozen cells were unusable because ice crystals would have damaged the DNA. That belief would rule out the possibility of resurrecting extinct animals from their frozen remains.  But the latest research -- published in the journal, Proceedings for the National Academy of Sciences -- shows that scientists may have overcome the obstacle.

http://www.cnn.com/2008/TECH/science/11/04/japan.mouse.clone/index.html?eref=rss_topstories