To view this video please enable JavaScript, and consider upgrading to a web browser that supports HTML5 video Movie 1. Simulation of a constricting wild-type ring. Components represented according to scheme of Figs. 1, 2. No bridging occurs. Actin turnover protects the cytokinetic contractile ring from structural instability Zachary McDargh, Tianyi Zhu, Hongkang Zhu, and Ben O'Shaughnessy J Cell Sci 2022. 136:None-None; doi: 10.1242/jcs.259969 Download Original Video