Embryos not Employed in The existing cycle can be cryopreserved. Cryopreservation is usually reached with vitrification, a fast freezing procedure. Vitrification is thought to forestall cryoinjury by reducing the development of intracellular crystals.[35] All embryos can be frozen in clients in danger for ovarian hyperstimulation syndrome (reviewed more in "Problems"). https://www.ivf.com.mx/