Fig. 7.
From: Membrane dynamics and organelle biogenesis—lipid pipelines and vesicular carriers

Membrane expansion during maturation of the endocytic pathway. Electron microscopy of cells stimulated with EGF and anti-EGFR-Au for 20–40 min. Examples show increased MCSs accompanying the gain in membrane content of endocytic organelles during maturation. Black arrows, ER contact sites. Scale bar, 200 nm