Salamanders, they discovered, have an ultra sensitive version of something called the mTOR M-T-O-R-A molecule that acts as an on off switch for protein production and like survivalists, who fill their basements with non perishable food for hard times, salamander cells stockpile messengers of RNA molecules, which contain genetic instructions for producing proteins. Well, the combination of this easily activated mTOR molecule and a repository of its ready to use mRNAs means that after any injury, salamander cells can quickly produce the proteins needed for tissue regeneration