To view this video please enable JavaScript, and consider upgrading to a web browser that supports HTML5 video Movie 2 High-speed movie of haptonematal coiling.The movie was recorded at 1000 fps and plays at a speed of 0.03×. Microtubule stabilizer reveals requirement of Ca2+-dependent conformational changes of microtubules for rapid coiling of haptonema in haptophyte algae Mami Nomura, Kohei Atsuji, Keiko Hirose, Kogiku Shiba, Ryuji Yanase, Takeshi Nakayama, Ken-ichiro Ishida, and Kazuo Inaba Biology Open 2019. 8:None-None; doi: 10.1242/bio.036590 Download Original Video