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Measuring regrowth: Erk gradients guide zebrafish fins back to their original size after injury

In a new Nature Physics study, researchers found that fin regrowth in zebrafish is driven by a brief burst of growth signal at the fin tip, sized to the amount lost, which sets up gradients of Erk activity that guide the regrowth.

Measuring regrowth: Erk gradients guide zebrafish fins back to their original size after injury

We haven't written up this one. Phys.org has the full story — the link below goes straight to it.

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