1. Blastocyst transfer does not cause a sex-ratio imbalance
Gareth Weston, Ph.D., Tiki Osianlis, Ph.D., James Catt, Ph.D., Beverley Vollenhoven, Ph.D. 
Fertility and Sterility 
Volume 92, Issue 4, Pages (October 2009)
DOI: /j.fertnstert
Copyright © 2009 American Society for Reproductive Medicine Terms and Conditions

2. Figure 1
Graphs showing the numbers of male and female embryos, respectively, reaching clearly defined stages of embryonic development on (A) day 1, (B) day 2, (C) day 3, (D) day 4, and (E) day 5. There was no statistical difference between male and female embryonic development at any stage analyzed in vitro. 2PN = Two-pronuclei stage; Comp = compacting embryo; Cav morula = cavitating morula; Expg B = expanding blastocyst; Expd B = expanded blastocyst.
Fertility and Sterility  , DOI: ( /j.fertnstert )
Copyright © 2009 American Society for Reproductive Medicine Terms and Conditions