{
  "id": 15743970,
  "title": "Measuring regrowth: Erk gradients guide zebrafish fins back to their original size after injury",
  "url": "https://urgent.news/2026/10/20/measuring-regrowth-erk-gradients-guide-zebrafish-fins-back-to-their",
  "topic": "science",
  "section": "Science",
  "published": "2026-10-20T11:40:15.000Z",
  "source": {
    "name": "Phys.org",
    "slug": "phys-org",
    "url": "https://phys.org/news/2026-10-regrowth-erk-gradients-zebrafish-fins.html"
  },
  "original_language": "en",
  "account": null,
  "summary": "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.",
  "key_points": [],
  "editors_take": null,
  "illustration": null,
  "coverage": {
    "outlets": 1,
    "also_reported_by": []
  },
  "ai_generated": true,
  "disclaimer": "Summaries, key points and the editor’s take are written by software from other outlets’ reporting and may contain errors — always check the linked original."
}