To view this video please enable JavaScript, and consider upgrading to a web browser that supports HTML5 video Movie 2 Application of EF to tracking endosome movement. Time-lapse series showing endosome movement in an ROI within BJ-5ta cells expressing GFP-Rab7 and mApple-Rab5. Scale bar: 1 μm. Timestamp: seconds. Playback rate: 10 frames sec-1. J Cell Sci ; doi: 10.1242/jcs.240796 Download Original Video