Martha Luna, M. D. , Marlena Duke, M. Sc. , Alan Copperman, M. D

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Presentation transcript:

Blastocyst embryo transfer is associated with a sex-ratio imbalance in favor of male offspring Martha Luna, M.D., Marlena Duke, M.Sc., Alan Copperman, M.D., Lawrence Grunfeld, M.D., Benjamin Sandler, M.D., Jason Barritt, Ph.D. Fertility and Sterility Volume 87, Issue 3, Pages 519-523 (March 2007) DOI: 10.1016/j.fertnstert.2006.06.058 Copyright © 2007 American Society for Reproductive Medicine Terms and Conditions

FIGURE 1 Blastocyst expansion according to gender. Blastocyst expansion is not significantly different between female and male embryos. Only male embryos resulted from blastocysts with an expansion score of 3 (P=.7306). Luna. Sex-ratio imbalance in blastocyst transfers. Fertil Steril 2007. Fertility and Sterility 2007 87, 519-523DOI: (10.1016/j.fertnstert.2006.06.058) Copyright © 2007 American Society for Reproductive Medicine Terms and Conditions

FIGURE 2 Inner cell mass (ICM) and trophectoderm grading according to gender. More female embryos presented a higher ICM score than did males. However, significance was not attained (P=.1895). Trophectoderm grading was higher in male embryos, although a lack of significance is observed (P=.3412). Luna. Sex-ratio imbalance in blastocyst transfers. Fertil Steril 2007. Fertility and Sterility 2007 87, 519-523DOI: (10.1016/j.fertnstert.2006.06.058) Copyright © 2007 American Society for Reproductive Medicine Terms and Conditions