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Confocal images of HeLa cells after immunolabeling for Tanks 1–2 (red fluorescence) and microfilaments (green fluorescence): a) control cells; b) cells treated with 100 µM etoposide for 20 h; c) cells treated with 1 µg/mL actinomycin D for 20 h. Arrows in b, c: apoptotic cells. DNA was stained with Hoechst 33258 (blue fluorescence). Scale bar: 20 µm.
