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flag Scientists discover axolotls use retinoic acid to regrow limbs, inspiring human regeneration research.

flag Axolotls, or "smiling salamanders," can regrow limbs and even repair organs, inspiring scientists studying human limb regeneration. flag Researchers found that retinoic acid, a molecule related to vitamin A, acts as a guide for cell regeneration. flag This discovery, from a study with glowing axolotls, brings scientists closer to understanding how humans might one day regrow lost limbs.

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