Egg vitrification and freezing is an assisted reproductive technology (ART) that allows the preservation of female fertility in order to have the chance of being a mother in the future when the woman is ready to do so.
Vitrification consists of quickly reducing the temperature to which an oocyte is exposed to -196 °C. The procedure takes place in liquid nitrogen and cryopreservants, which avoid the breaking of the egg’s cell membranes.
It’s possible to become a father after having suffered cancer. There are several strategies, but the best would be cryopreserving a sperm sample that will be used once the patient has got over the illness.
There are two protocols in order to preserve oocyted: slow freezing and vitrification. Nowdays, vitrification has replaced slow freezing, since it has higher survival rates.