Figure 2
From: Small noncoding RNA GcvB is a novel regulator of acid resistance in Escherichia coli
Effects of individually deleting oppA and dppA on acid resistance in Escherichia coli. The acid-stress survival abilities of two individual deletion mutant strains lacking previously identified targets of GcvB were compared with those of the MG1655 wild type (wt) strain. The abilities of strains to survive a 30 minute acid shock were quantified by two methods: (A) acid recovery measured as optical density at 600 nm (OD600). (B) Percent survival determined by colony forming units (cfu). Error bars represent standard deviation (* P-value < 0.05).