Abstract
This study compares the quality, developmental capacity and global gene expression profile of embryos generated from superovulated and natural cycles. We found that ovarian stimulation impaired quality of blastocysts (cell number: 68.9 +/- 6.9 vs. 76.8 +/- 7.9; diameter of blastocysts: 145.3 +/- 76.9 microm vs. 152.6 +/- 65.5 microm), fetus development (rate of development to term: 45.5% vs. 69.1%; weight of 18.5-dpc fetuses: 1.23 +/- 0.03 g vs. 1.34 +/- 0.03 g) and caused 92 genes differentially expressed.
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