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A multiplexed immunoassay biosensor for detecting serum biomarkers was developed by using photoluminescent (PL) aqueous CdSe/ZnS quantum dots (QDs) with high efficiency and stability as fluorescence labels and carboxyl functionalized microporous nylon membrane as a matrix. Two main biomarkers of Down Syndrome (DS), β-human chorionic gonadotrophin (β-HCG) and α-fetal protein (AFP), were selected for...
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