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

- Source: Phys.org
- Published: 2026-10-20T11:40:15+00:00
- Category: Science
- Original: https://phys.org/news/2026-10-regrowth-erk-gradients-zebrafish-fins.html
- Canonical: https://groundlevelnews.com/story/measuring-regrowth-erk-gradients-guide-zebrafish-fins-back-to-their-or-b54230/

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.

_Ground Level News shows a short summary only; the full article and all rights belong to Phys.org._