cryopreservation is a technique in which plants explants are preserved at -1960 C.

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Vitrification is the preferred method for the cryopreservation of gametes. It involves freezing them quickly so that ice crystals do not form.

cryopreservation

cryopreservation means storing of cells tissues etc at vry low temoeratures like 77k or-196centigrade using liqvid nitrogen

Eleonora Porcu has written:

'Handbook of human oocyte cryopreservation' -- subject(s): Oocytes, Cytology, Cryopreservation, Methods