How Does A Zebrafish Grow A New Tail? The Answer May Help Treat Human Injuries

... If a zebrafish loses a chunk of its tail fin, it'll grow back within a week. Like lizards, newts, and frogs, a zebrafish can replace surprisingly complex body parts. A tail fin, for example, has many different types of cells and is a very intricate structure. It is the fish version of an arm or leg. [click link for full article] ...