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Fig. 4. RECQL4 colocalizes with PML. HeLa cells were stained with anti-RECQL4 (red) and anti-PML (green) antibodies. Where red and green signals overlap, a yellow pattern is seen, indicating colocalization of RECQL4 and PML. DAPI-staining shows nuclear DNA. Bar,
10 µm. (Upper panel) Colocalization of RECQL4 and PML in untreated HeLa cells. (Lower panel) Colocalization of RECQL4 and PML after 10 µM etoposide treatment of HeLa cells.