Dizygotic twin delivery following in vitro fertilization and transfer of thawed blastocysts cryopreserved at day 6 and 7 E.Scott Sills, M.D., Cindy L.

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Dizygotic twin delivery following in vitro fertilization and transfer of thawed blastocysts cryopreserved at day 6 and 7 E.Scott Sills, M.D., Cindy L Sweitzer, B.S., Paula C Morton, B.S., Mark Perloe, M.D., Carolyn R Kaplan, M.D., Michael J Tucker, Ph.D. Fertility and Sterility Volume 79, Issue 2, Pages 424-427 (February 2003) DOI: 10.1016/S0015-0282(02)04687-3

FIGURE 1 Post-thaw photomicrograph of three blastocysts cryopreserved on days 6 and 7, all of which implanted after embryo transfer. Following assisted hatching, blastocysts are reexpanding, with one actively hatching just before ultrasound-guided transfer (scale = 100 micron). The patient subsequently delivered dizygotic (female/female) twins. Sills. Births after day 6 and 7 blastocyst cryopreservation. Fertil Steril 2003. Fertility and Sterility 2003 79, 424-427DOI: (10.1016/S0015-0282(02)04687-3)