How zebrafish rebuild the skeleton of amputated fins

Fish, in contrast to humans, have the fascinating ability to fully regenerate amputated organs. The zebrafish (Danio rerio) is a popular ornamental fish. When parts of its tailfin are injured by predators, or are experimentally amputated, the lost tissue is replaced within three weeks. Zebrafish therefore are a favored animal model to study the cellular and molecular principles of organ regeneration.

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