Figure 2.

Pairwise displacements of pilus retraction. This example shows the normalized probability p of pairwise displacements Δx from a pilus retraction event of MS11_{pilT oe} at 100 pN with an average velocity of 251 nm/s (solid line) and a test in which the microscope stage moved a stuck bead on a cover glass with a velocity of 283 nm/s (dotted line).