Injured jellyfish seek to regain symmetry, study shows

Self-repair is extremely important for living things. Get a cut on your finger and your skin can make new cells to heal the wound; lose your tail—if you are a particular kind of lizard—and tissue regeneration may produce a new one. Now, Caltech researchers have discovered a previously unknown self-repair mechanism—the reorganization of existing anatomy to regain symmetry—in a certain species of jellyfish.

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