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Our bodies are constantly renewing themselves. Every day, countless cells are replaced, tissues recover, and incredibly complex biological processes take place without us even noticing. And yet, what humans can do is only a small fraction of what nature has achieved. Some salamanders can regrow entire limbs, including bones, muscles, nerves, and blood vessels. Planarians can regenerate astonishingly large parts of their bodies, while certain other animals can even restore parts of their hearts.
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