Cryopreservation is the use of very low temperatures to preserve the cells and tissues that are structurally intact.”

Cryopreservation or cryoconservation is a process where biological material – cells, oocytes, spermatozoa, ovarian tissues, pre – implantation embryos, organs, etc – are frozen to preserve the material for an extended period of time.^[1] At low temperatures (typically −80 °C (−112 °F) or −196 °C (−321 °F) using liquid nitrogen) any cell metabolism which might cause damage to the biological material in question is effectively stopped.