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Gator-aid: Alligators Gnawing on the Mystery of Tooth Regeneration

Researchers at the Keck School of Medicine of USC are studying the alligator for clues how to regenerate teeth in humans. The tooth structure of alligators is surprisingly similar to that of humans, except that an alligator has eighty teeth, each of which can be regenerated up to fifty times in a single day. The frequency at which American alligators can regenerate teeth is due to the activation of dormant stem cells which trigger the growth of a new tooth when the alligator loses one.

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