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RFP-Killin is tightly associated with DNA throughout the cell cycle. (A) Cos-E5 cells were transfected with RFP or GFP-PCNA and RFP-Killin expression vectors. Changes in the number of fluorescent positive cells without or with 300 mM NaCl extraction were visualized by fluorescence microscopy (X20). The scale bar was at 0.3 cm. (B) Quantification of fluorescence positive cells before and after salt extraction.
