Hepatitis B virus detected in paper currencies in a densely populated city of India: A plausible source of horizontal transmission?

Figure 4 Atomic force microscopy images of hepatitis B virus-positive sample S8. A: Wider field of view for the sample; B: Magnified view of the encircled area marked in Figure 4A; The encircled area illustrates representative cluster of virion particles. The arrow points to a single particle in the cluster; C: Magnified view of encircled area shown in Figure 4B in two different contrasts. The arrows show the individual intact virion particle of approximately 42 nm diameter; D: Three-dimensional (3D) view of the individual clusters seen in Figure 4C.