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Trisomy 21 mosaicism in a woman with two children with trisomy 21 Down's syndrome
  1. Sara Kaffe,
  2. Lillian Y. F. Hsu,
  3. Kurt Hirschhorn
  1. Department of Pediatrics, Division of Medical Genetics, Mount Sinai School of Medicine of the City University of New York, USA


    Trisomy 21 mosaicism was identified by fluorescent quinacrine banding in a phenotypically normal mother, who gave birth to two children with trisomy 21 Down's syndrome.

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    • * This work was supported in part by US Public Health Service. Grant HD-02552 and Clinical Genetics Center Grant GM-19443. L.Y.F.H. and K.H. are Career Scientists of the Health Research Council of the City of New York (L.Y.F.H., I-761; K.H., I-513).