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Article

Sex chromosome tetrasomy and pentasomy.

Pediatrics - 1 Oct 1995

Linden M G, Bender B G, Robinson A

Abstract excerpt

Sex chromosome abnormalities occur in at least 1 in 400 births and include the well-described 47,XXX, 47,XXY, 47,XYY, and 45,X karyotypes. The addition of more than one extra X or Y chromosome occurs rarely, and little information is available in the medical literature. Individual case reports make up most of this body of knowledge, and all are based on subjects who identified themselves postnatally. Many were...

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PMID: 7567329

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