Figure 5

Quantification of biofilm formation in A. baumannii strains on plastic surface. To determine total cell mass the OD₆₀₀ was measured after the cultures were briefly sonicated to resuspend most of the cells. The OD₅₈₀ was measured after the stained tubes were incubated with ethanol-acetone. The error bar show the S.D. ***,p < 0.0001 using Student’s t-test comparing mutant and wild-type strains.