Typical TEM images of MNV-1. (a): without laser irradiation (the control); (b): with laser irradiation at a power density of 1.1 ± 0.2 MW/cm2 (here, for the sake of clarity, only one inactivated MNV-1 is shown); (c): with laser irradiation at a power density of 100 ± 10 MW/cm2. The spherical structure with a diameter of around 30 nm in (a) represents the presence of MNV-1 in the control. At the intermediate laser power density, (b) shows that the inactivated MNV-1 particle forms cracks at the structural links of the capsid. At the high laser power density, (c) demonstrates the disintegration of the capsid of the inactivated MNV-1 into spherical structures with a diameter of around 10 nm.