Fig. 5

Trail following and nematic alignment (bundle formation) of filaments. a. Microscopic view of bundled filaments. Colors indicate the trajectory of the tip positions of each filament (0 s in cyan to 120 s in magenta). The video is provided in Movie S9. b. A filament following a trail shown as a thin line before the filament. Points indicate positions of the tip at each time point shown by color (0 min in cyan, 40 min in magenta). The video is provided in Movie S10. c. Time-lapse images of colliding filaments. Points indicate the trajectory of tip positions shown by color (0 min in cyan, 12 min in magenta). The video is provided in Movie S11. d. Distribution of incoming angle and outgoing angle between colliding filaments. e.  Relationship between the velocity and length of single filaments. Line indicates the result of regression analysis performed on data with values less than 95.98 μm (for details, see text and Fig. S7)