Also, the influence of viability on SC invasion was corroborated since the association capacity of dead BCG PGL I and dead M. leprae was about 50% less in comparison to live BCG PGL I and live M. leprae, respectively (dead BCG PGL I 41.00 ± 6.00% and dead M. leprae 47.33 ± 2.52%) while, when compared to live mycobacteria, dead BCG WT and BCG PGL TB maintained the same levels. Here, SDHD is linked to tuberculosis.