Influenza
viruses moving at two typical configurations formed by
several microtubules. (A) Snapshots of a virus being confined by a
grid formed by microtubules (Scale bar: 2 μm). (B) Snapshots
of a virus being confined by an intersection of microtubules (Scale
bar: 2 μm). (C, D) Kymograph images of the movements of the
viruses shown in A and B, respectively (Scale bar: 0.5 μm).
(E, G) Velocity vs time plots of the movements shown in A and B, respectively.
The dotted lines indicate the velocity of 0.5 μm/s. (F, H) MSD
vs time plots of the movements shown in A and B, respectively. The
red lines are the fits to MSD = 4Dτα (α is a coefficient and α < 1).