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. 2020 Mar 25;20(7):1820. doi: 10.3390/s20071820

Figure 1.

Figure 1

Schematic diagram showing the one-step sandwich hybridization recognition procedure, which involves a DNA capture probe (pDNA) immobilized on the acrylic microspheres, and target (cDNA) and reporter (rDNA) probes labeled with gold nanoparticle–poly(styrene-co-acrylic acid) latex (AuNP–PSA) spheres.