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Spiny mice have resilient, large mitochondria that help them regenerate tissue.
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March 2017 in “Journal of Investigative Dermatology” Mutations in the ACTB gene cause Becker’s nevi and may lead to muscle issues in Becker’s nevus syndrome.
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October 2020 in “Frontiers in cell and developmental biology” WWOX deficiency in mice causes skin and fat tissue problems due to disrupted cell survival signals.
The mutation helps mice handle heat better without affecting hair growth.