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has major subject area list
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alpha-Fetoproteins; Amniotic Fluid; Chorionic Gonadotropin; Down Syndrome; Estriol; Trisomy
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information resource reference
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Biochemical markers of trisomy 21 in amniotic fluid. Prenat Diagn. 1997 Jan; 17(1):31-7.
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label
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Biochemical markers of trisomy 21 in amniotic fluid.
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