Embryos not used in the current cycle might be cryopreserved. Cryopreservation is typically realized with vitrification, a immediate freezing approach. Vitrification is believed to prevent cryoinjury by lowering the event of intracellular crystals.[35] All embryos can also be frozen in people in danger for ovarian hyperstimulation syndrome (reviewed further more https://www.ivf.com.mx/