a google search got me another article "Genetic Mechanism In Mole Rats Can Be Targeted In Cancer Research" http://www.sciencedaily.com/releases/2009/03/090315223845.ht...

"Researchers have found that subterranean mole rats have developed cellular mechanisms in order to survive the low levels of oxygen in their underground habitat -- mechanisms that are similar to those used by tumors to survive and progress in humans."