Susceptibility to mercurials. E. coli cells carrying pUC118 (filled triangles), pMKY12 (filled circles), or pMRA114 (filled diamonds) were grown in liquid medium containing varying concentrations of HgCl2
(A) or C6H5HgOCOCH3
(B). Growth was estimated by measuring the turbidity at 600 nm. Data represent the mean ± S.D. of triplicate measurements from three independent experiments. *p < 0.05 vs. control. **p < 0.01 vs. control. ##
p < 0.01 vs. pMRA114.