Figure 3From: A eukaryotic-type signalling system of Pseudomonas aeruginosa contributes to oxidative stress resistance, intracellular survival and virulenceMacrophage-mediated bactericidal assay. Deletion of pppA-ppkA genes resulted in a significantly decreased survival rate. The standard errors of the means for 10 experimental points are shown. The differences between the mutant and its parental wild-type strain are statistically significant (P < 0.05). % of survival represents % of bacteria surviving after internalization.Back to article page