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Does the timing of blastulation prognosticate risk of aneuploidy?

      It has been established the rate of aneuploidy is higher in embryos which blastulate more slowly (day 6) relative to those which blastulate within the normal time range (day 5). Interpreting these data is complicated by the fact that later blastulation is associated with increasing maternal age and declining ovarian reserve. Thus, it is unknown if, within a single cohort of embryos from a single treatment cycle, those embryos which blastulate on day 6 have an increased risk of being aneuploid. This study seeks to address that question.
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