For the cryo-preservation we select with a special method from the total quantity of fertilised Ova the three best ones - they are further cultivated to a embryo and transferred into the womb of the woman the next day or the day after. The remaining fertilised ova are frozen with a computer-controlled procedure in liquid nitrogen and stored by -196 degrees centigrade.


The fertilised ova are indefinitely storable in the liquid nitrogen, because of the extremely low temperature in the liquid nitrogen all biological processes come to a stand, thereby the ova cannot grow old.


In Germany all actions in the IVF are regulated by the Law of Embryo Protection. Therefore, a maximum of three fertilised ova per cycle are allowed to be developed to embryos.

Einfreiren der Kryokonservierung

cryopreservation of fertilised oocytes



Lagerung der Kryokonservierung

storing of the fertilised oocytes



Further to