Cryopreservation vs. Lyophilization

Cryopreservationnoun

the preservation of biological tissue at cryogenic temperatures, typically at -80°C (dry ice temperature) or -196°C (the boiling point of liquid nitrogen).

Cryopreservation

Cryo-preservation or cryo-conservation is a process where organelles, cells, tissues, extracellular matrix, organs, or any other biological constructs susceptible to damage caused by unregulated chemical kinetics are preserved by cooling to very low temperatures (typically −80 °C using solid carbon dioxide or −196 °C using liquid nitrogen). At low enough temperatures, any enzymatic or chemical activity which might cause damage to the biological material in question is effectively stopped.

Lyophilizationnoun

freeze-drying; the removal of moisture from a frozen material using vacuum

Lyophilizationnoun

a method of drying food or blood plasma or pharmaceuticals or tissue without destroying their physical structure; material is frozen and then warmed in a vacuum so that the ice sublimes