Tools for studying growth patterns and chemical dynamics of aggregated Pseudomonas aeruginosa exposed to different electron acceptors in an alginate bead model

OCT signal intensity (dB) of alginate beads over 48？h of incubation. The OCT signal was averaged for an area covering a vertical depth of 150？μm (from the bead surface into the interior) and a lateral width of 100？μm and was used as a proxy for bacterial growth (see “Methods”). Bars represent average？±？standard errors of the means from three replicates. Significant differences as indicated. *p？>？0.05; **p？≤？0.01; ***p？≤？0.00