Why is it better or different than the old way of freezing eggs?
Because this method uses higher concentrations of cryoprotectants it is more efficient at removing the water from the egg cell. This coupled with the faster freezing rate allows the eggs to be further protected from the damaging effects of the freezing process. The old way of freezing was slower and gentler but often did not fully dehydrate the cells and left the eggs and embryos susceptible to damage.
