Figure 4.

(A) Measured distance between barriers (ΔL_b, see Fig. S5) that exert a restoring force on the receptors (N = 18 measurements). (B) Receptor trajectories under a series of external forces before (red-yellow) and after (blue-green) actin depolymerization on the same cells. The beginning of a trajectory is plotted in red (blue) and the color gradually changes to yellow (green) toward the end of the trajectory for the case without (with) actin depolymerization. (C) Displacement in the flow direction for three trajectories of panel B before (red circles) and after (blue squares, two different trajectories) actin depolymerization with latrunculin B.