When teeth grow on the body

The body of some catfish is completely covered with teeth that regenerate. Carlos Rivera-Rivera and Juan Montoya-Burgos discovered that these extra-oral teeth always grown on a bone, regardless of its type, which suggests a role for bone in the induction of dental tissue. These results, published on October 18, 2017 in Proceedings of the Royal Society, help to elucidate the mechanisms allowing the formation and regeneration of teeth in all vertebrates.

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