Figure 1From: Development of a serological assay to predict antibody bactericidal activity against non-typeable Haemophilus influenzae NTHi antigens are accessible to antibodies on bacterial surface. Binding of anti-PD, PE, P6, OMP26, HtrA, PilA and anti-176 to live bacteria was evaluated by flow cytometry. Histograms represent a typical experiment out of two performed with similar results. RFI, relative fluorescence intensity. Filled gray line, bacteria incubated with an irrelevant serum; red line, bacteria incubated with antigen specific serum.Back to article page