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Definition of Isochromosome

Isochromosome: An abnormal chromosome that has two identical arms due to duplication of one arm and loss of the other. Isochromosomes are found in tumors and in some girls with Turner
syndrome.

Source: MedTerms™ Medical Dictionary
http://www.medicinenet.com/script/main/art.asp?articlekey=4055
Last Editorial Review: 3/19/2012

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