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PURPOSE To assess the efficacy of a novel, defined vitrification procedure using recombinant human albumin (rHA) for cryopreservation of human blastocysts. DESIGN Retrospective study. SETTING Private IVF clinic. PATIENTS 1,496 patients received vitrified/warmed embryo transfer (ET). METHODS Surplus blastocysts, and blastocysts from patients(More)
The presence of multinucleated blastomeres (MNBs) in embryos is associated with poor developmental competence in assisted reproductive technologies. This phenomenon is observed not only in humans but also in other animal species. The purpose of the present study was to investigate the characteristics of embryos with MNBs (MNB embryos) that could be utilized(More)
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