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Evaluation of biofilms produced by S. mutans WT and single-, double- and triple-deletion mutants by CV staining and FE-SEM. (a and b) CV assays of cells grown in BM containing glucose (a) or sucrose (b) as the carbon source. (c) Visualization of biofilms grown on 16 mM glucose and 4 mM sucrose by FE-SEM. Scale bars represent 2 µm. *P<0.05; ***P<0.001; ****P<0.0001.
