Fig. 1.
(A) Typical confocal fluorescence image of syncolin-EGFP–labeled insulin granules in live MIN6 cells. Granules are typically 350–400 nm in diameter. See SI Appendix, Fig. S1, and Movie S1 for examples of trajectories. (B) Cumulative distribution of jump lengths (symbols) and fit of an integrated log-normal distribution (dashed line). (Inset) Raw distribution of x components of steps compared with a Gaussian fit.