title: The importance of an early diagnosis of fertilization disorders.
abstract: Typical possibilities of abnormal development in human oocytes cultured and fertilized in vitro were studied using phase-contrast microscopy. All oocytes were checked three times for maturity, fertilization and embryo development. A total of 180 non-cleaved oocytes and 30 embryos originating from polypronuclear oocytes are described. It is concluded that an exact inspection at the fertilization check is essential to avoid the transfer of abnormally developing oocytes and embryos.
authors.affiliation: Department of Obstetrics and Gynaecology, University of Graz, Austria.
authors.forename: H H
authors.initials: HH
authors.lastname: Kessler
authors.forename: R
authors.initials: R
authors.lastname: Winter
authors.forename: G
authors.initials: G
authors.lastname: Dohr
authors.forename: W
authors.initials: W
authors.lastname: Urdl
authors.forename: H H
authors.initials: HH
authors.lastname: Pusch
mesh_terms: D006063:Chorionic Gonadotropin / Q000627:therapeutic use; D002996:Clomiphene / Q000627:therapeutic use; D005260:Female; D005307:Fertilization in Vitro / Q000379:methods; D006801:Humans; D007247:Infertility, Female / Q000175:diagnosis* / Q000503:physiopathology; D008596:Menotropins / Q000627:therapeutic use; D009865:Oocytes / Q000166:cytology* / Q000502:physiology; D015044:Zona Pellucida / Q000648:ultrastructure
chemical_list: D006063:Chorionic Gonadotropin; D002996:Clomiphene; D008596:Menotropins