No treatment. Associated with Fig. 3 A. Untreated cells: U2OS PML−/− + YFP-PMLV cells, monitored by fluorescence microscopy every 15 min for 6.75 h (6.75 fps). 5 z-planes spaced at 2 µm. DeltaVision Elite restoration microscope with incubation chamber set to 37°C and 5% CO2. Green indicates YFP (filter set Ex510/10 nm, Em537/26 nm). Scale bars are 5 μm.