Another idea being studied is the possibility of harnessing the power of regeneration that some amphibians possess. The Mexican axolotl, a type of salamander, is about nine inches long and has astonishing abilities to regenerate severed limbs, damaged brain tissue, and even a crushed spinal cord. Its genome was just recently sequenced, and you can be sure that researchers on aging will be looking for clues about how genetic therapies might help to regenerate aging human tissue. Interestingly, axolotls do not live particularly long, unlike, say, hydras, but their ability to avoid dying after
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