Fig. 2From: Development of a stress-induced mutagenesis module for autonomous adaptive evolution of Escherichia coli to improve its stress toleranceThe genetic construction of plasmids pTL01-16 and the frequency of Lac+ colonies at day 6 for E. coli FC40 strains harboring them. E EcoRI, X XbaI, Se SpeI, Sh SphIBack to article page