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MSNBC(Jun. 10, 2009) Our large brains may make us cognitively superior to chimps, but, according to a new hypothesis, we could be paying a price for our sizable cerebrum: a higher rate of cancer. To find out why this might be, John McDonald, a researcher at Georgia Tech, turned to the human and chimp genome. Many past studies have looked at differences in how genes are expressed among humans and chimps. McDonald and his colleagues re-examined the data of a previous gene expression study and added some previously excluded information. (full story..) |