During the last few days several news sources have published an AP article on injured soldiers being tested with a procedure to possibly regrow limbs or at least a portion of them. How is amphibian regeneration aiding in this human regeneration experiment? It turns out that the regeneration powder is derived from pig bladders and it is not even a new procedure. ACell Inc., the company making the powder, has a link to a Wall Street Journal regarding the latest experiments but also mentions that they have been developing regeneration products since 1999. Salamanders are mentioned in both articles primarily because they are heavily studied since they able to regenerate limbs and not produce scar tissue as in humans (there is a large Pentagon project currently studying salamander regeneration but I could not find any details on what they are specifically studying). So salamanders are helping to understand the regeneration process and, thankfully, are not being ground up for regeneration powder.