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Representative images of E. coli and K. pneumoniae strains remodeling the actin cytoskeleton on the surface of HT-29 cells. Cells were stained with Atto-488 phalloidin (green) and DAPI (blue). Arrows indicate some bacteria forming pockets on the surface of HT-29 cells. (a–a′′) Maximum intensity projection of a 3D confocal image showing E. coli strain 154; (b,b′) K. pneumoniae strain 135. Scale bars: 10 μm; Original magnification: (a–a′′) ×600; (b,b′) ×400.
