Fig 6.

Three size classes of electron-dense vesicles. (A) Electron tomographic slices representative of the three distinct size classes of vesicles. The three types present a similar morphology with a single membrane and electron-dense content. Bars, 30 nm. (B) Size distribution of the vesicles (in micrometers). (C) Electron tomographic model view of the subcellular localization of the three size classes (the plasma membrane [light blue] and large to small vesicles [dark blue to light blue] are indicated). Bar, 1 μm.