Figure 5
Schematic illustration of the aptamer-based sandwich assay. (a) Sample preparations for the use of the current antibody-based ELISA kit. (b) Aptamer-based sandwich assay platform consisting of the following three major factors: the functionalized surface by capture_aptamer (LCN2_apta4), hybridization and signal read-out by HRP-labeled reporter_aptamer (LCN2_apta2), which enables the device to be run on straight serum and there is no need for sample dilution. All parts of this figure were drawn by the authors K-A. L. and J-Y. A.
