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Localization of ColE1 in the presence of a second plasmid. Plasmid pAS2 was localized in E. coli MGTRY in the presence of plasmids pBAD33 (A) or RK2 (B) or in E. coli MG1655 in the presence of plasmid pCV234 (C). In panel A, cells were visualized for pAS2 and the nucleoid was stained with DAPI. In panels B and C, only foci are shown. The bar in each panel corresponds to 1 μm.
