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. 2007 Dec 7;190(8):2680–2689. doi: 10.1128/JB.01494-07

FIG. 3.

FIG. 3.

Effects of zinc (A) and cadmium (B) on the growth of the E. coli TH201 transporter-deficient strain overexpressing P. putida KT2440 transporter genes from a temperature-inducible plasmid. Dose-response curves for control strain E. coli TH201(pTIHis) (▴), a strain overexpressing the cadA2 gene [E. coli TH201(pTIcadA2His)] (•), and a strain overexpressing the cadA1 gene [E. coli TH201(pTIcadA1His)] (▪) grown at 37°C are shown. The relative growth indicates the growth efficiency in the presence of a metal compared to the growth in medium without the metal. The data are the means ± standard deviations of at least three independent experiments.