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Capsular polysaccharide (CP) expression in biofilm formed by the Newman strain. Biofilms were developed in static cultures for 24 h at 37°C in TSBg supplemented with SAL or FeSO4 as indicated. CP serotype 5 was assessed by ELISA. Each bar represents the arithmetic mean ± SEM of the Abs492 relative to the final culture density (ODG). Negative control: S. aureus Reynolds CP5-null.
