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  • 1
    Electronic Resource
    Electronic Resource
    Springer
    Bulletin of experimental biology and medicine 81 (1976), S. 451-453 
    ISSN: 1573-8221
    Keywords: human ovum ; fertilization and development in vitro
    Source: Springer Online Journal Archives 1860-2000
    Topics: Biology , Medicine
    Notes: Abstract A method of cultivating and fertilizing human ova obtained from ovaries removed at operation is described. A special method of sampling active spermatozoa was used for fertilization. Zygote formation was observed 24–36 h after fertilization of the ripe ova, an embryo of the two-cell stage was formed after 36–40 h, and an embryo at the four-cell stage after 48 h. The number of blastomeres reached 8 after 60–64 h, and after approximately 100–120 h the embryos reached the morula stage. The results provide wide scope for the study of the physiology and pathology of early human embryonic development.
    Type of Medium: Electronic Resource
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