Naked Mole Rat

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A virtually hairless and partially poikilothermic rodent—whimsically known as a sabre-toothed sausage—which is native to the horn of Africa. Naked mole rats are the most interactive of all vertebrates, and have a social structure similar to bees and other eusocial organisms
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They found that the naked mole-rats had no activity in the trigeminal nucleus 6 a bundle of nerves in the brainstem that serves as a repository for sensory information, including pain -- in response to the acidic fumes.
By better understanding how naked mole-rats tamp down their pain response to acidic environments, scientists may be able to dull the pain caused by acidification of injured tissues.
It might look like a wrinkly hot dog with teeth, but the naked mole-rat is actually an amazingly hardy animal.
Maybe, by finding out what makes the naked mole-rat so long-lived and robust, we can borrow a little bit of that staying power for ourselves.
Carbon dioxide builds up in naked mole-rat nests because their underground habitats are very crowded and poorly ventilated, the authors wrote.
The naked mole-rats spent as much time exposing themselves to acidic fumes as they spent in fume-free areas, Park said.
In naked mole-rats, no such activity was found in the trigeminal nucleus when stimulated.