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Prenat Diagn. 1994 Nov;14(11):1071-3.

Diagnosis of Bloom's syndrome by sister chromatid exchange evaluation in chorionic villus cultures.

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  • 1South Western Regional Cytogenetics Centre, Southmead Hospital, Bristol, U.K.


Cultures of a chorion biopsy taken from a pregnancy at risk of Bloom's syndrome revealed the high sister chromatid exchange frequency diagnostic of this rare disorder. To obtain the result, cultures were grown under standard conditions, with the addition of 10 microM 5'-bromodeoxyuridine for the final 48 h of incubation. This result demonstrates the feasibility of early prenatal diagnosis of Bloom's syndrome.

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