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Trisomy 13 in monozygotic twins discordant for major congenital anomalies.
  1. N Naor,
  2. Y Amir,
  3. T Cohen,
  4. S Davidson
  1. Department of Neonatology, Beilinson Medical Center, Tel Aviv University, Israel.


    The occurrence of trisomy 13 in twins is very rare. We report a pair of genotypically identical twins with trisomy 13 discordant for major anomalies. This case contributes to the already published data on the contribution of non-genetic factors to the aetiology of congenital malformations in monozygotic twins.

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