FIG. 9.

Biofilm formation by serovar Typhimurium strain BJ2710 or serovar Typhimurium 3512 (BJ2710 yhjN::cam) on a plastic slide. Images shown in panels A and B depict GFP-labeled BJ2710 or BJ3512, respectively, after growth for 24 h as biofilm on the plastic slides. Panels C and D are three-dimensional representations of the same data shown in panels A and B. BJ2710 organisms adhered incompletely to the plastic surface but were able to form biofilm towers up to 100 μM tall after the original attachment events, whereas no organisms of strain BJ3512 were detectable on the plastic after 24 h of incubation.