Cryopreservation of gametes of threatened species in viable and fertile condition can be referred to as [2015]
(4)
Cryopreservation is an advanced method of ex-situ conservation. It involves preservation at -196°C in liquid nitrogen. It can maintain tissue culture, embryos, animal cells/tissues, spermatozoa indefinitely. The cryopreserved material is revived through special technique, when required.