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A presumptive tetrasomy for the short arm of chromosome 9

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Summary

For the identification of an extra chromosome in a female child a number of recently developed staining techniques were used.

The extra element found in 86% of the patient's peripheral lymphocytes resembles an isochromosome for the short arm of chromosome No. 9, in which case a tetrasomy for this arm would exist. The clinical findings in our patient were compared with those in patients reported to have extra chromosome 9 material.

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Rutten, F.J., Scheres, J.M.J.C., Hustinx, T.W.J. et al. A presumptive tetrasomy for the short arm of chromosome 9. Hum Genet 25, 163–170 (1974). https://doi.org/10.1007/BF00281423

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  • DOI: https://doi.org/10.1007/BF00281423

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