Fig. 4.
Survival kinetics of C57BL/6 mice infected with M. tuberculosis H37Rv wild type, mce2 operon and mce1 operon mutant strains. Ten mice per strain were initially infected via aerosol infection route and followed for the indicated number of weeks. By week 56 all mice infected with the H37Rv wild type and mce1 operon mutant strain were dead while only 20% of mice infected with the mce2 operon mutant were affected.