Axolotls, with their signature smiles and pink gills, are the celebrities of the salamander world. But they are more than ...

A new study reveals the key lies not in the production of a regrowth molecule, but in that molecule's controlled destruction. The discovery could inspire future regenerative medicine.

Have you ever seen a creature that seems to smile at you from behind the glass, with feathery gills waving like carnival ...

In other words, an injured axolotl hand knows not to grow into an arm partly because the enzyme, called CYP26B1, blocks the regeneration process from going further, McCusker explained.

Researchers are studying axolotls -- "small, smiling salamanders" -- in the hopes of learning how humans might one day regrow arms or legs.

In other words, an injured axolotl hand knows not to grow into an arm partly because the enzyme, called CYP26B1, blocks the regeneration process from going further, McCusker explained.

In other words, an injured axolotl hand knows not to grow into an arm partly because the enzyme, called CYP26B1, blocks the regeneration process from going further, McCusker explained.

In other words, an injured axolotl hand knows not to grow into an arm partly because the enzyme, called CYP26B1, blocks the regeneration process from going further, McCusker explained.