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The use of a detailed zygote score after IVF/ICSI to obtain good quality blastocysts: the German experience

1 May 2002

Abstract excerpt

BACKGROUND: Due to improvements in embryo culture, it is now possible to transfer embryos 5 days after oocyte retrieval and IVF/ICSI at the blastocyst stage, giving a better synchronization with the female reproductive tract. In Germany it is illegal to culture more than three embryos. Therefore, there is need for a sufficient selection at the pronuclear (PN) stage to select the best zygotes and exclude those of...

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PMID: 11980760
DOI: 10.1093/humrep/17.5.1327

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