A prenatal blood test can be used to determine if an unborn baby has Down's syndrome without the small risk to the fetus posed by invasive testing methods such as amniocentesis, U.S. researchers said on Monday.
Researchers led by Stephen Quake of Stanford University in California created a way to look for the extra chromosomes that cause Down's and similar birth detects in the tiny amounts of fetal DNA that circulate in the mother's blood. Read more....
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