The secret behind the alligator’s toothy smile
Dental stem cells enable the reptile to grow new teeth every year
![](https://i0.wp.com/www.sciencenews.org/wp-content/uploads/2013/05/mr_alligator_feat.jpg?fit=860%2C460&ssl=1)
SEE YOU LATER, ALLIGATOR TEETH A band of stem cells in alligators' jaws enables them to replenish each of their 80 teeth about once a year.
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