Embryos not used in The present cycle is often cryopreserved. Cryopreservation is typically reached with vitrification, a quick freezing system. Vitrification is assumed to circumvent cryoinjury by reducing the development of intracellular crystals.[35] All embryos may also be frozen in people at risk for ovarian hyperstimulation syndrome (reviewed even further https://www.ivf.com.mx/