Figure 3From: A novel enzyme-linked immunosorbent assay for detection of Escherichia coli O157:H7 using immunomagnetic and beacon gold nanoparticlesOptimal amounts of B-DNA, Strep-HRP, and B-GNPs. (a) Optimization graph of the B-DNA concentration in the preparation of B-GNPs. (b) Optimization of the B-GNP volume. (c) Strep-HRP volume optimization graph.Back to article page