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Levels of sigA DNA and sigA mRNA and growth of M. tuberculosis H37Rv in THP-1 cells. The numbers of CFU (□), the levels of sigA mRNA (○), and the levels of sigA DNA (•) during growth of M. tuberculosis H37Rv in THP-1 cells were determined. The values were normalized to the values obtained after 1 h of infection in THP-1 cells.
