FIG. 3.

Biofilm formation by serovar Typhimurium strain BJ2710 or serovar Typhimurium BJ3402 (BJ2710 ΔwcaM) on a plastic slide. (A and B) GFP-labeled BJ2710 and BJ3402, respectively, after growth for 24 h as biofilm on the plastic slides. (C and D) Three-dimensional representations of the same data shown in panels A and B. Both organisms adhere incompletely to the plastic surface but were able to form biofilm towers up to 100 μM tall after the original attachment event.