Poss (IMAGE)

Duke University

Poss

Caption

The outer layer of the zebrafish heart (shown in green) is regenerated rapidly after damage, covering the heart like a wave from the base of one chamber to the tip of the other. Researchers have discovered properties of this mysterious outer layer -- known as the epicardium -- that could help explain the aquarium denizen's remarkable ability to regrow cardiac tissue.

Credit

Jingli Cao

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