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  • Title: Inherited partial duplication of chromosome No. 15.
    Author: Fujimoto A, Towner JW, Ebbin AJ, Kahlstrom EJ, Wilson MG.
    Journal: J Med Genet; 1974 Sep; 11(3):287-91. PubMed ID: 4139262.
    Abstract:
    A boy with unusual facial appearance and mental retardation was found to have duplication for the distal half of the long arm of chromosome No. 15 and possibly deficiency for the distal end of the long arm of No. 21. The chromosome abnormality was inherited from his mother, who had a translocation involving chromosomes Nos. 15 and 21. Giemsa-banding localized the break point in chromosome No. 15 just distal to the intense band at the midportion of the long arm. The break point in chromosome No. 21 appeared to be at the distal end of the long arm. The difficulty encountered in cytogenetic analysis of the propositus with conventional staining, the importance of chromosome analysis of the parents, and the application of differential staining techniques are also presented.
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