Aided by stem cells, a lizard regenerates a perfect tail; informs efforts to improve wound healing in humans
https://stemcell.keck.usc.edu/perfect-lizard-tail
"used gene-editing tools to make embryonic NSCs [neural stem cells] unresponsive to the ventralizing signal, and surgically implanted these cells into adult tail stumps—leading to the regeneration of perfect tails... Perfecting the imperfect regenerated lizard tail provides us with a blueprint for improving healing in wounds that don’t naturally regenerate, such as severed human limbs and spinal cords"
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