Embryos not used in The existing cycle could be cryopreserved. Cryopreservation is often realized with vitrification, a swift freezing method. Vitrification is thought to circumvent cryoinjury by lowering the development of intracellular crystals.[35] All embryos may also be frozen in individuals in danger for ovarian hyperstimulation syndrome (talked about more https://www.ivf.com.mx/