FIG 4.

Viability of wild-type UA159, smu_833 mutant, and complement strains in planktonic and biofilm cultures. Bacterial cultures were either grown planktonically in THB to an OD₄₇₀ of 1.0 (A) or allowed to form a biofilm for 5 h in TYE with 1% sucrose (B). Appropriate dilutions of the cultures were made and plated onto THB plates, and CFU were enumerated. Data are averages of those from at least five independent experiments. NS, no significant difference (P > 0.05). Statistical analysis was done using Student’s t test.