Expression of the Genes Encoding the Trk and Kdp Potassium Transport Systems of Mycobacterium tuberculosis during Growth In Vitro

Figure 3

The rates of growth of the WT and the trk-gene knockout strains at varying extracellular pH levels grown for 14 days in pH-buffered Sauton media. The results are of six replicates from three experiments represented as colony-forming units/mL ± SEM. The cfu/mL at Day 0 were and for the WT and trk-gene knockout strains, respectively. At Day 14, cfu/mL were ,  , , and and , , , and for growth in pH 5.5, 6.0, 6.5, and 7.0 for WT and trk-gene knockout strains, respectively.