Embryos not used in The existing cycle can be cryopreserved. Cryopreservation is typically realized with vitrification, a speedy freezing approach. Vitrification is believed to stop cryoinjury by reducing the event of intracellular crystals.[35] All embryos can be frozen in people at risk for ovarian hyperstimulation syndrome (reviewed even further in https://www.ivf.com.mx/