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First trimester fetal karyotyping in twin pregnancy.
  1. B Brambati,
  2. A Oldrini,
  3. G Simoni,
  4. G L Terzoli,
  5. L Romitti,
  6. F Rossella,
  7. M Ferrari


    Fetal chromosome analysis in a twin pregnancy during the first trimester is described. Problems of the reliability of tissue sampling are also discussed. The authors emphasise the advantage of direct cytogenetic analysis from the tissue specimens used for enzyme determination or DNA studies.

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