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Ciclo-de-embriones-criopreservadosWhen we carry out a cycle of In Vitro Fertilization or an ICSI cycle, there may be good quality embryos that are not transferred into the uterus. In that case, they are cryopreserved (frozen), and can be used to make new embryo transfers without having to carry out a new ovarian stimulation.

These embryos are cryopreserved in liquid nitrogen, and in accordance with Spanish legislation, can remain frozen during the entire reproductive life of the woman, to be unfrozen at a later date.

Although the gestation rates for unfrozen embryos is slightly lower, the process is much

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Written by: Sabrina Camara