How does cryogenics work?
Gray gave you a decent answer. Cryogenic science is used on both live and deceased animals. When people die of a serious disease and they have $$$, they opt to be frozen a lot times and stored, so that when the technology may become available to cure them and the technology to revive them they can be brought back. Freezing things using cryogenic techniques kills the animal but places the body in a state of suspended animation. There is no tissue or muscle decay. After the body is thawed the hope is to restart it and bring it back alive again. So far our experiments have failed at this. Speaking practically, cryogenics research is useful because if we could freeze livers and kidneys and thaw them as we needed them for transplants that would be great.
