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Radial expansion of axonal actin rings caused by passages of lysosomal cargoes. Time-lapse dual-color SIM images at 20-s intervals showing that diameter changes of periodic actin rings (SiR-actin) correlate with the passage of large lysosomal cargoes (Lysotracker red). The bracket segment is amplified in the bottom panels. Diameter changes are indicated with arrows. Scale bars = 1 µm (top); 5 µm (bottom). Video is 1 frame/s.
