Medical Definition of Triple X syndrome
1.
In principle, the phenotypic features characteristic of trisomy of the X chromosome. Original observations (made in mental institutions) were seriously biased and the phenotypic changes spurious; now, even the remaining claim, that there is mild mental retardation, is suspect. The outstanding feature of the syndrome is the occurence of twin Barr bodies in a typical cell.
(05 Mar 2000)
Lexicographical Neighbors of Triple X Syndrome
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