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Effect of different concentrations of baicalin on cell number of blastocyst in vitro. The nuclei of the blastocysts were stained with PI and the cell numbers were counted using a fluorescence microscope. * P < 0.05 vs. in vivo control group and ** P < 0.01 vs. in vivo control group; # P < 0.05 vs. IVC group and ## P < 0.01 vs. IVC group.
