FIG. 2.

Growth on heme iron in the presence of deferoxamine. Deferoxamine mesylate was added to TT18 at a final concentration of 1 μM. Hemin chloride was added at a starting concentration of 62.5 nM, and serial 2-fold dilutions were prepared to obtain the concentrations shown. Inocula containing the same amount of strain 26695m were added to triplicate wells. Growth was assessed by measuring the ATP content after 30 h. rlu, relative light units. The error bars indicate standard deviations. *, P < 0.05 compared with the culture containing no heme.