Fluorescent distribution of PdhS-mCherry fusion in stationary growth phase E. coli. A, early stationary phase; B, middle stationary phase; C, late stationary phase. White arrows point to refractile bodies that are only present in the bacteria from the late stationary culture phase. Scale bar: 2 μm. DIC means differential interference contrast (Nomarski). All micrographic images were taken with the same magnification.