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Epifluorescence micrographs of E. coli K-12TG1 cells stained with DAPI and FITC. (A and B) Untreated cells stained with DAPI (A) and FITC (B). (C and D) Cells stained after 10-min treatment at 250 MPa and −20°C with DAPI (C) and FITC (D). Scale bar, 2 μm.
