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New prenatal blood tests developed at Stanford can check fetal DNA, raising ethical questions
The Mercury News

Soon a simple blood test will be able to tell newly pregnant women if they are carrying a child with Down syndrome — raising the prospect, and perhaps peril, of a world with fewer imperfections. Based on fast-moving DNA science, one test is likely to be available by late fall; a second is due out early next spring. While screening tools already exist, the new blood tests will provide an easier and earlier way to help us decide the delicate question of what kind of babies we want.

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