Figure 6.
Images of Congo red-stained (a) bare glass and (b,c) film-coated glass substrates after incubation under static conditions in the presence or absence of P. aeruginosa for 48 hours. Images show relative levels of biofilm-related exopolysaccharide (EPS) matrices on the surfaces of glass slides (e.g., 10 mm × 30 mm) coated with (a) no film (bare glass), (b) a PEI/PVDMA film treated with decylamine, and (c) a PEI/PVDMA film treated with glucamine. Substrates marked with a (−) denote samples grown in the absence of bacteria (media only) used as negative controls.