Dichorionic triamniotic triplet pregnancy with monozygotic twins discordant for trisomy 13 after preimplantation genetic screening: case report Deborah M. Taylor, Ph.D., Meen-Yau Thum, M.D., Hossam Abdalla, M.D. Fertility and Sterility Volume 90, Issue 5, Pages 2017.e5-2017.e9 (November 2008) DOI: 10.1016/j.fertnstert.2008.01.095 Copyright © 2008 American Society for Reproductive Medicine Terms and Conditions
Figure 1 (A) FISH images from blastomeres biopsied from day-3 embryos. The DNA is counterstained aqua, and colored spots represent the specific signals for chromosomes 13 (red), 16 (aqua), 18 (blue), 21 (green), and 22 (gold). (E1) Embryo 1 has a normal complement of the chromosomes tested. (E2) Embryo 2 has a normal complement of the chromosomes tested. (E3) Embryo 3 has an abnormal complement of the chromosomes tested because it has trisomy 13. (E4) Embryo 4 has an abnormal complement of all the chromosomes tested. (B) Ultrasonographic examination at 6 weeks and 5 days of gestation, showing two interuterine gestation sacs. D1 and D2 indicate the presence of two embryos within one sac. Fertility and Sterility 2008 90, 2017.e5-2017.e9DOI: (10.1016/j.fertnstert.2008.01.095) Copyright © 2008 American Society for Reproductive Medicine Terms and Conditions