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Competitive growth and survival in minimal medium. E. coli BJ4 (▴) and E. coli BJ4 rpoS (■) were inoculated into minimal medium (0.2% glucose) and incubated with shaking (160 rpm) at 37°C for 20 days. Viable counts (CFU per milliliter) were determined at different time points by plating on selective medium.
