To view this video please enable JavaScript, and consider upgrading to a web browser that supports HTML5 video Movie S2. HeLa cells monitored by QPM for 48 hours. Each frame is a montage of 8 X 9 OPD images of 1.184 mm X 0.888 mm FOV observed under 10X objective. The time interval between frames is 30 minutes. PNAS. DOI: 10.1073/pnas.2002152117 Download Original Video Browse All Videos »