Graph showing the mean average biomass of the biofilms produced by all isolates, as measured through the crystal violet assay.

<p>Optical density on the y axis refers to the average biofilm biomass (in the absence of AA) for all the isolates shown on the x axis. White (unshaded) bars represent isolates that were excluded from further testing owing to poor biofilming ability when compared to their other species counterparts. Red bars represent the isolates with unreliable biofilm production. Error bars represent the standard error for each average value and asterisks denote values statistically significantly different from the broth only control.</p

Graph showing the MBEC results for isolates AB_AYE and MDR_A.

<p>Optical density on the y axis refers to the average biofilm seeding for isolates AB_AYE and MDR_A after 3 hours of exposure to AA at the range of dilutions tested. POS: positive control, NEG: negative (broth only) control. The vertical line represents the MBEC, the error bars represent the standard error, and asterisks denote dilutions with statistically significant reductions in the seeding of the biofilm according to the t-test.</p

List of the control and clinical isolates used in this study.

<p>^ Carbapenemase producing Enterobacteriaceae</p><p>⁺ New Delhi metallo-β-lactamase</p><p>* Carbapenem resistant Enterobacteriaceae</p><p>^@ Extended-Spectrum β-lactamase</p><p>^$ Verona integron-encoded metallo-β-lactamase</p><p>^# AmpC-type β-lactamase</p><p>^£ genotyping refers to VNTR profile for <i>P</i>. <i>aeruginosa</i> and PFGE data for <i>Acinetobacter</i>.</p><p>List of the control and clinical isolates used in this study.</p

Table showing the tests performed on the isolates and their MIC, MBIC and MBEC values of AA.

<p>^a ✓ denotes that the test was performed and the result.</p><p>^b denotes that there was statistically significant reduction in seeding at all concentrations of AA (t-test, p<0.05)</p><p>Table showing the tests performed on the isolates and their MIC, MBIC and MBEC values of AA.</p