Researchers studying the naked mole rat sequenced its genome to find out why it lives 10 times longer than its cousin the mouse and why it is virtually impervious to cancer while about 95% of its unfortunate relatives die from cancer. The study may also provide insights into Alzheimer's disease; results show that a naked mole rat's brain has little variation in gene expression during its lifespan, while humans underexpress when they are young and overexpress genes when they age.

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