Figure 2: AFM imaging and analysis of HCV RNA deposited in Mg2+-free buffer. A representative 3×3 μm2 image (A, scale bar=0.4 μm) along with a gallery of 0.4×0.4 μm2 images (B, scale Bar=0.1 μm) for RNA deposited in buffer lacking Mg2+ cations . Histograms of the volume (C) and diameter of the smallest enclosing circle (D).