Abstract
Human oocytes have been taken from the mother before ovulation, fertilized in vitro and grown in vitro to the eight- or sixteen-celled stage in various media.
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EDWARDS, R., STEPTOE, P. & PURDY, J. Fertilization and Cleavage in vitro of Preovulator Human Oocytes. Nature 227, 1307–1309 (1970). https://doi.org/10.1038/2271307a0
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DOI: https://doi.org/10.1038/2271307a0
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