Cryopreservation is a specialized preservation technique that cools biological samples—such as cells, tissues, or organs—to ultra-low temperatures, typically around using liquid nitrogen. At these temperatures, metabolic and biochemical processes are effectively halted, allowing materials to be stored for extended periods without degradation.
Ultra-low temperatures slow down all chemical reactions and cellular divisions, essentially putting the sample into a state of "suspended animation". cryopreservation ppt download
A "flash-freezing" method using high concentrations of CPAs that causes water to solidify into a glass-like state without forming any ice crystals. or organs—to ultra-low temperatures