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Outcomes of transfer experiments. A) Summary of outcomes for transfers of optimal and suboptimal blastocysts. B) There was no difference in implantation rate (percent of embryos implanted/total embryos transferred) in the two groups. Early pregnancy loss rate was higher and ongoing pregnancy rate lower (both expressed as percent of embryos/total number of implanted embryos) in mice with suboptimal embryos. *P < 0.05.
