IbpA-YFP and PdhS-mCherry localization pattern in stationary culture phase E. coli. A, early stationary phase; B, middle stationary phase; C, late stationary phase. Pictures were taken with Normarski (DIC), as well as YFP and mCherry typical fluorescence. The same parameters were applied for each culture condition. Scale bar: 2 μm. All micrographic images were taken with the same magnification.