Sunday, October 25, 2009
Detected down syndrome through Blood Test:-
Howard Hughes Medical Institute researchers have developed a new prenatal blood test that accurately detected Down syndrome and two other serious chromosomal defects in a small study of pregnant women 18. If confirmed in large trials, as they say, the testing would provide a safer and faster alternative to prenatal tests such as amniocentesis that pose a risk of invasive small abortion.
Researchers have long known that a pregnant woman's blood contains small amounts of DNA from the fetus. Howard Hughes Medical Institute researcher Stephen Quake and colleagues at Stanford University to devise ingenious means of fetal DNA found in the mother's blood to determine whether the embryo cells contain an extra chromosome is associated with many types of severe birth defects.
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