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Salamanders and zebrafish reveal how limbs regrow

Original: 🦎 NEW: # Salamanders and # zebrafish regrow lost limbs and fins by reactivating a cellular program after injury, forming

New research explains how salamanders and zebrafish regrow lost limbs and fins: after injury they reactivate a cellular program that forms a blastema, a mass of cells that multiply and rebuild bone, nerve, muscle and blood vessels in the correct shape and size. Nerves are reported to drive the process, with scientists examining its evolutionary origins and what it could mean for regenerative medicine in humans.

Why now: The findings shed light on natural regeneration, a topic of wide interest for its potential medical applications.

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• 🦎 NEW: # Salamanders and # zebrafish regrow lost limbs and fins by reactivating a cellular program after injury, forming a blastema of cells that multiply and rebuild bone, nerve, muscle and blood vessels in the right shape and size. # Nerves drive the process, and # evolution… · tksst@fediscience.org · 9

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