DNA screening more accurately identified likely cases of genetic disorders caused by extra chromosomes, like Down syndrome, in a study of pregnant women at low risk for problems.

DNA screening more accurately identified likely cases of genetic disorders caused by extra chromosomes, like Down syndrome, in a study of pregnant women at low risk for problems.
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( Randi Lynn Beach/For the Times / February 26, 2014 )

DNA screening more accurately identified likely cases of genetic disorders caused by extra chromosomes, like Down syndrome, in a study of pregnant women at low risk for problems.

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