Figure 7From: Effect on β-galactosidase synthesis and burden on growth of osmotic stress in Escherichia coliBurden (ф) as a function of β-galactosidase activity for (a) growth on glycerol + IPTG, filled diamond (b) growth on glycerol + lactose + IPTG, filled triangle (c) growth on glycerol + lactose, filled square. The lines represent the best linear fit for the three cases. Note that cases (b) and (c) indicate negative ф representing benefit.Back to article page