Fig. 4From: Adaptive laboratory evolution and shuffling of Escherichia coli to enhance its tolerance and production of astaxanthinGrowth of E. coli AST-4AS and E. coli AST-4 in the LB medium (A) and the LB medium with the selection stress conditions (5Â g/L NaAc, 0.3Â M NaCl and 2Â mM H2O2, pH 5.5) (B). The data represent the means of three replicates, and error bars indicate standard deviationsBack to article page