Biofilm Formation and Quorum-Sensing-Molecule Production by Clinical Isolates of Serratia liquefaciens

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  Description of how biofilm samples were made for SEM (Fig. S1), description of how biofilm samples were made for confocal imaging and maximum-intensity-projection CLSM images (Fig. S2), bioreporter-based detection of AHL production by S. liquefaciens strains (Fig. S3), production of AHLs in ECPs and biofilm formation by S. liquefaciens strains at low temperature (Fig. S4), examples of (HP)LC-MS chromatograms in extracts of cell-free supernatants of S. liquefaciens as discussed in the text and Table 2 (Fig. S5), examples of 96-well microtiter plates after CV solubilization (Fig. S6), planktonic growth by S. liquefaciens (Fig. S7), and mixing experiments using ECPs from AHL-producing strains (Fig. S8).

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