Research Article

Polymethacrylate Sphere-Based Assay for Ultrasensitive miRNA Detection

Figure 1

SEM images of the spheres from different size categories along with their size distributions: (a) MMS-1 (200–400 μm); (b) MMS-2 (400–600 μm); (c) MMS-3 (600–700 μm); (d) MMS-4 (700–900 μm). Specific surface area measurement for 10 mg of each size group is presented in the center.