Embryos not used in The present cycle might be cryopreserved. Cryopreservation is often achieved with vitrification, a fast freezing system. Vitrification is believed to stop cryoinjury by lowering the development of intracellular crystals.[35] All embryos may also be frozen in people at risk for ovarian hyperstimulation syndrome (talked over even https://www.ivf.com.mx/