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Biology

Regeneration and Neural Control of Limb Regrowth in Axolotls

Quick fact

Axolotls can regenerate an entire limb, including bones, muscles, and nerves, without any scarring—a feat that requires intact nerves at the amputation site to signal the regrowth process.

Why this is interesting

Imagine losing an arm and growing a perfect new one, complete with bones, muscles, and nerves. For the axolotl, a type of salamander, this isn't science fiction—it's a routine biological ability. How does it do it, and what role does its nervous system play?