Aftershock: The Next Economy and America's Future by Robert B. Reich. âAftershockâ¦â is the interesting concise book that deals with how our economy came to be, how we can learn from history and some specific ideas on how we can address these problems.
Both the cardiac muscle and nervous tissue in the brain and spinal  cord have no functional regenerative capacity.
In fact, many differentiated cells lose this ability. To help counteract this loss, tissues maintain stem cells to serve as a reservoir of undifferentiated cells. Stem cells typically have the capacity to mature into many different cell types.