Fig 6.

Biofilm development in a flow cell system. Wild-type and cat1-E strains were inoculated into flow cells and grown in modified MM (0.5% sea salt and 10 mM acetate) at room temperature. Biofilm formation was observed on the plastic surface of the flow cell over a 3-day time period. Although the cat1-E strain initially lagged in attachment, cells were able to attach over time and formed biofilms with a different architecture than that formed by wild-type cells. Arrows mark the large cell clusters observed only in cat1-E strain flow cells.