To view this video please enable JavaScript, and consider upgrading to a web browser that supports HTML5 video Movie S2. We mark 10% of cells with eGFP and visualize single bacterial motion in such a system. Only a small amount of short cells (red trajectories) can go against surrounding flow (blue arrows). Data-driven quantitative modeling of bacterial active nematics He Li, Xia-qing Shi, Mingji Huang, Xiao Chen, Minfeng Xiao, Chenli Liu, Hugues Chaté, and H. P. Zhang PNAS. 2018. 116:777-785 DOI: 10.1073/pnas.1812570116 Download Original Video Browse All Videos »