Figure 3From: Evaluation of three industrial Escherichia coli strains in fed-batch cultivations during high-level SOD protein productionEffects of induction on plasmid-bearing cells. (A) Plasmid copy number per cell during the production phase (means ± standard error of the mean) and (B) percentage of plasmid-bearing cells before induction (feed-hour 7), after one generation of induction (feed-hour 14), and after three generations induced (feed-hour 28; end of process) determined by Koch-plating.Back to article page