Embryos not used in The present cycle may be cryopreserved. Cryopreservation is typically accomplished with vitrification, a quick freezing procedure. Vitrification is assumed to prevent cryoinjury by reducing the development of intracellular crystals.[35] All embryos can be frozen in clients in danger for ovarian hyperstimulation syndrome (mentioned further in "Troubles"). https://www.ivf.com.mx/