Salamanders, Regenerative Wonders, Heal Like Mammals, People

The salamander is a superhero of regeneration, able to replace lost limbs, damaged lungs, sliced spinal cord -- even bits of lopped-off brain. Based on experiments on genetically modified axolotl salamanders, researchers show that cells from the salamander's different tissues retain the "memory" of those tissues when they regenerate, contributing with few exceptions only to the same type of tissue from whence they came.

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