Freezing Of Embryos & Semen
Everyone call it as freezing of embryo but more correctly it is “embryo cryopreservation” because the ultimate goal is to store the embryo cryogenically and to preserve its viability for future initiation of pregnancy.
Before good embryo cryopreservation protocols were available, so many IVF clinics had to discard any excess embryos left over after embryo transfer. Early embryo cryopreservation programs usually had limited success. Now days more successful protocols have been introduced that have made embryo cryopreservation much more successful. Most of the IVF children now have younger siblings that were conceived at exactly the same time, but born years apart due to the increased success of embryo cryopreservation.