title: [Morphologic characteristics of the development of embryos in the preimplantation phase of the process of extracorporeal fertilization].
abstract: The authors presented results of the assessment of morphological parameters and human embryo division rate in preimplantation when various schemes of superovulation stimulation were used in the routine for extracorporeal fertilization. A great number of embryos with favourable morphologic signs were obtained due to the routine. It was demonstrated that over 50% of all the embryos employed in various schemes of superovulation stimulation were at the stage of four and more blastomeres by the moment of their implantation to the uterine cavity 44-48 hrs after the in vitro insemination. A significant increment in the rate of embryo preimplantation development in vitro was revealed during superovulation stimulation with clomifen citrate in combination with an inductor versus the stimulation with the inductor alone. There was no difference in the frequency of conception induced by the transfer of embryos in all the groups exposed to simulation of superovulation.
authors.forename: L V
authors.initials: LV
authors.lastname: Khi'lkevich
authors.forename: V A
authors.initials: VA
authors.lastname: Lukin
authors.forename: B V
authors.initials: BV
authors.lastname: Leonov
authors.forename: E A
authors.initials: EA
authors.lastname: Kalinina
authors.forename: E Ia
authors.initials: EIa
authors.lastname: Finogenova
mesh_terms: D001757:Blastomeres / Q000166:cytology / Q000502:physiology*; D004622:Embryo, Mammalian / Q000166:cytology / Q000502:physiology*; D047108:Embryonic Development / Q000502:physiology*; D005260:Female; D005307:Fertilization in Vitro; D006801:Humans; D011247:Pregnancy
vernacular_title: Morfologicheskie osobennosti razvitiia pre'dimplantatsionnykh émbrionov v programme ékstrakorpora'lnogo oplodotvoreniia.