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Biofilm formation of S. oneidensis MR-1 (strain AS93). Images display shadow projections of AS93 biofilms; x-z and y-z sagittal images at selected positions in the biofilm are shown at the bottom and right side of images C-F, respectively. Biofilms were grown in LM medium containing 0.5 mM lactate. Images displayed were recorded after 1, 8, 16, 24, 48, and 120 h (A-F). Bar = 80 μm.
