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. Author manuscript; available in PMC: 2019 Nov 22.
Published in final edited form as: Anal Chim Acta. 2018 May 4;1032:1–17. doi: 10.1016/j.aca.2018.05.011

Fig. 12. Schematic illustrations of bead-based assay system for sensitive detection of three biomarkers using QDs.

Fig. 12.

(A) Reaction principle for the bead-based sandwich assay;

(B) Three colors of beads after reaction in the chip;

(C) The structure of the chip. Reprinted from [100] With permission. (For interpretation of the references to color in this figure legend, the reader is referred to the Web version of this article.)