Cryopreservation allows banking of surplus embryos for later use. The embryos are stored in liquid nitrogen at -196ºC.

Vitrification is the most up-to-date freezing technique which provides the highest frozen-thaw survival rate (>90%) and causes the least damage to the embryos.

Embryo Banking (Embryo Freezing)
Embryo Banking (Embryo Freezing)
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