How Hydra Regrow Their Heads

The genes involved in hydra regeneration and development could offer clues about immortality.

By Katharine Gammon
Dec 10, 2021 8:00 PMDec 10, 2021 9:06 PM
hydra
(Credit: Lebendkulturen.de/Shutterstock)

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(Inside Science) — For decades, hydra -- tiny aquatic animals that look like floating tubes with arms -- have been synonymous with the quest for longevity. Now, a new paper maps the ways hydra can regenerate their heads by changing how their genes are regulated. 

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