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. 2004 Mar;70(3):1545–1554. doi: 10.1128/AEM.70.3.1545-1554.2004

FIG. 5.

FIG. 5.

Effect of pressure on nucleoid configuration of E. coli J1. Phase-contrast-fluorescence photomicrographs of exponential- and stationary-phase cells stained with DAPI are shown. (A) Untreated exponential-phase cells (100% viable cells); (B) untreated stationary-phase cells (100% viable cells); (C) exponential-phase cells treated with 300 MPa for 8 min (0.002% viable cells); (D) stationary-phase cells treated with 300 MPa for 8 min (73% viable cells); (E) exponential-phase cells treated with 400 MPa for 8 min (<0.0001% viable cells); (F) stationary-phase cells treated with 400 MPa for 8 min (61% viable cells). Bars, 2 μm.