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. 2021 Sep 15;12:730434. doi: 10.3389/fimmu.2021.730434

Figure 1.

Figure 1

Biofilm formation by B. pertussis Tohama I strain (gray column) and the clinical isolate BpAR106 (black column) on an abiotic surface. Biofilm biomass was quantified at 96 h of growth by staining with crystal violet and absorbance was measurement at OD 595 nm. Each value represents the mean from three independent experiments and the bars indicate standard deviation. Statistically significant differences in Student’s t-test between the clinical isolate and B. pertussis Tohama I biomass absorbance are indicated by * (p < 0.05).