Figure 2From: Diffusible signal factor (DSF) quorum sensing signal and structurally related molecules enhance the antimicrobial efficacy of antibiotics against some bacterial pathogens Synergistic activity of different concentrations of DSF (A) and C13-DSF (B) with gentamicin and kanamycin on B. cereus . Data shown are means of two replicates and error bars indicate the standard deviations. The differences between the samples with addition of DSF or C13-DSF and control are statistically significant with *p < 0.05, **p < 0.01, ***p < 0.001, as determined by using the Student t test.Back to article page