Figure 1.

Heterogeneous dynamics of endosomes is characterized by random durations of their trajectories. (a) Schematic illustration of the cell (side view) where endosomal trajectories are recorded in the focal volume (between two horizontal dashed lines). Endosomes randomly enter and exit the focal volume where they move in a mesh of microtubules (black curves) randomly attaching to them. (b) The PDF of the duration T for trajectories in MRC5 and RPE cells. The dashed line is a power-law function $\sim T^{-2}$ to guide the eyes.