Microscopy from Scientific Research

U-2OS cells were treated for 3 h with bleomycin 20 μg/mL or DMSO (vehicle). Cells were then fixed and analyzed by immunofluorescence microscopy with specific antibodies directed against RIF1. Left: representative images of cells. Scale bars: 10 μm. Right: foci number per cell; a t test was performed to analyze statistical difference between means calculated counting foci in at least 50 cells per experiment (n = 3, biologically independent experiments); p values obtained from this analysis are shown.

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