Endocytosis. Ultrafast endocytosis takes place near the dense projection.Additional representative micrographs showing endocytosis at the dense projection. (A and B) A large invagination at the dense projection 20 ms after stimulation. Plasma membrane (black) and dense projection (red) are highlighted in (B). (C) An invagination adjacent to the dense projection at 20 ms after stimulation. (D) A large vesicle adjacent to the dense projection 50 ms after stimulation. (E) A large vesicle detached from the dense projection 100 ms after stimulation. These large vesicles only appear transiently after the stimulation of channelrhodopsin. Black arrows indicate the invaginations or large vesicles.DOI:http://dx.doi.org/10.7554/eLife.00723.014. Ultrafast endocytosis at Caenorhabditis elegans neuromuscular junctions. Watanabe S, Liu Q, Davis MW, Hollopeter G, Thomas N, Jorgensen NB, Jorgensen EM - eLife (2013). Not Altered. CC.