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Impact of dnaB overexpression on cell and nucleoid morphology. Wild type (TB28) and Δrep cells (N6577) containing either pBAD or pBADdnaB (pJGB143) were grown in LB in the absence of arabinose prior to shifting into LB containing 0.2% arabinose. Strains were then grown to mid-logarithmic phase and analysed by phase contrast microscopy and DAPI staining of nucleoids.
