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Evidence for a strong paternal effect on human preimplantation embryo development and blastocyst formation. Article Google Scholar 2. Tesarik J, Greco E: The probability of abnormal preimplantation development can be predicted by a single static observation on pronuclear stage morphology. Reprod Biomed Online. About this article Cite this article Berger, D. The focus of the study was to characterize early development in embryos derived from severely teratozoospermic specimens and compare the pattern of development to embryos derived from less dysmorphic sperm.
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