Partial trisomy 21
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A. Hagemeijer; E. M. E. Smit
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Article
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1977
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Springer
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English
โ 516 KB
Cytogenetic analysis of a 6-year-old girl with moderate mental retardation revealed 46 chromosomes with a tandem translocation (21;21) resulting in a partial trisomy 21. Only the terminal band 21q22 was not in triplicate. G-, Q-, R-, and C-banding techniques and silver nitrate staining of the nucleo