Figure 1From: Relevance of the two-component sensor protein CiaH to acid and oxidative stress responses in Streptococcus pyogenesAnalysis of the growth of 13 sensor knockout strains cultured in acidic media (pHÂ 6.0) in an atmosphere containing 5% CO 2 . The CFU/ml after 23Â h, broth culture of wild-type strain 1529 and its derived sensor knockout strains are shown. Viable counts were performed on BHI-Y and sheep blood agar plates. At least three independent experiments were performed. The error bars indicate the standard error of the mean (SEM).Back to article page