Three groups of human embryos have been researched. There are breezy, cryoconserved and cryoconserved after preimplantating genetic diagnosis (PGD) embryos. We have discovered that the pregnancy rate after the cryoconserved embryos that haven’t been undergone biopsy transfer unreliable less than that one after the breezy embryos’ transfer. The reproductive outcome trivially descends in the result of embryos’ transfer after biopsy and cryopreservation. The significant quantity of embryos preserves their vital activity. The possible pathology of genes or chromosomes is established before the moment of transfer into the uterus. Here is no need to repeate an induction of ovulation in women with cryoconserved embryos. That’s why the usage of cryoconservation and PGD are recommended in the additional reproductive technology cycles.
