Embryos not Employed in the current cycle may be cryopreserved. Cryopreservation is usually reached with vitrification, a fast freezing approach. Vitrification is thought to circumvent cryoinjury by decreasing the event of intracellular crystals.[35] All embryos can be frozen in people in danger for ovarian hyperstimulation syndrome (discussed further more in https://www.ivf.com.mx/