Progress in Understanding Regeneration in Salamanders
Shwann cells are shown here in a salamander limb. When the limb regrew after being amputated, only these cells wrapped around nerve fibers; other cell types did not turn into Shwann cells. Credit: D. Knapp/E. Tanaka The salamander is a superhero of regeneration, able to replace lost limbs, damaged lungs, sliced spinal cord — even …