Figure 6.

Azithromycin treatment of NTHi clinical strain biofilms. A range of concentrations of azithromycin were used to treat pre-established 24 h static biofilms. Biofilm bacteria were serially diluted and plated 24 h later in order to assess viability. Results pooled from three experiments done in triplicate are represented by the mean with SEM. Statistical significance was determined by one-way ANOVA comparing the antibiotic-treated biofilms with the vehicle control (*P < 0.05; **P < 0.01; ***P < 0.001). The LOD is indicated by the dashed line.