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Naked Mole Rats: Supermodels of the Underground

Immune to acids, toxins and heavy metals. Doesn't feel pain. Never gets cancer. Stays young forever. Lives 9 times longer than its peer. Oh, and naked all the time.

No wonder the naked mole rats is considered the "underground supermodel" by The Scientist magazine.

Naked mole-rats, unlike other mammals, tolerate variable body temperatures, attributed to their lack of an insulatory layer of fur. Their pink skin is hairless except for sparse, whisker-like strands that crisscross the body to form a sensitive sensory array that helps them navigate in the dark. Both the naked mole-rat’s skin and its upper respiratory tract are completely insensitive to chemical irritants such as acids and capsaicin, the spicy ingredient in chili peppers. Most surprisingly, they can survive periods of oxygen deprivation that would cause irreversible brain damage in other mammals, and they are also resistant to a broad spectrum of other stressors, such as the plant toxins and heavy metals found in the soils in which they live. Unlike other mammals, they never get cancer, and this maintenance of genomic integrity, even as elderly mole-rats, most likely contributes to their extraordinarily long life span. In contrast to similar-size mice that only live 2–4 years, naked mole-rats can survive and thrive, maintaining normal function and reproduction, into their 30s.

Link (Photo: Meghan Murphy/Smithsonian's National Zoo/Flickr)

 

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