Embryos not used in The existing cycle can be cryopreserved. Cryopreservation is often obtained with vitrification, a speedy freezing process. Vitrification is assumed to circumvent cryoinjury by decreasing the development of intracellular crystals.[35] All embryos will also be frozen in patients at risk for ovarian hyperstimulation syndrome (talked about even https://www.ivf.com.mx/