Movie S1

Motility of internalized 450 nm microspheres. A live-cell movie showing motile 450 nm microspheres (green) internalized into endolysosomal vesicles (magenta). The scale bar is 1 μm. The movie was collected at a frame rate of 5 Hz (or 200 ms/frame) and sped up to 60 frames per second for display purposes.