Only a few animals in the world are able to regrow some limbs: salamanders, lizards and crabs. They do it through blastema cells, when a mass formation of stem cells occurs at the end of stump almost immediately after the limb is lost, so the regrowth process can begin.
To read more on this story, click here: Scientists were able to regrow frog legs. Will it pave the way for human regeneration?
