FIG. 3.
Biofilm formation by wild-type strain E99, mutant P101D12(pAT28), and complemented strains BLG1 (P101D12 transformed with pAT28 harboring bee-2 downstream of the aphA-3 promoter), BLG2 (P101D12 transformed with pAT28 harboring bee-3 downstream of the aphA-3 promoter), and BLG12 (P101D12 transformed with pAT28 harboring bee-2 and bee-3 downstream of the aphA-3 promoter). The y axis represents the optical density (OD) of dissolved crystal violet measured at 595 nm. The error bars represent the mean ± standard error.