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New Down syndrome test will lead to safer, more accurate screening - The Galveston County Daily News : Health

December 22, 2014

Medical Discovery News New Down syndrome test will lead to safer, more accurate screening

Posted: Tuesday, April 15, 2014 12:30 am

When it comes to chromosomes, extra copies are not a good thing. Every cell in the human body carries the same genetic information in two copies of 23 chromosomes.

Having an extra copy of a chromosome is called trisomy, and an extra copy of chromosome 21 is what causes Down syndrome.

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