FIG 3.

Growth of E. coli Δric, Δdps, and Δdps Δric strains under nitrosative and oxidative stress. E. coli wild-type, Δric, Δdps, and Δdps Δric strains were grown under anaerobic (A) and aerobic (B) conditions. At an OD₆₀₀ of 0.3, cells were left untreated (No stress), treated with 250 μM spermine NONOate for 7 h (A), or treated with 4 mM H₂O₂ for 5 h (B). Error bars are ±standard deviations (SD) for experiments carried out at least three times.