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Mycobacterium tuberculosis SigF is homologous to stress response and sporulation sigma factors in many bacteria. Consistent with a possible role in mycobacterial survival under stress conditions, M. tuberculosis sigF is strongly induced within cultured human macrophages and upon nutrient starvation, and SigF has been implicated in M. tuberculosis entry into(More)
OBJECTIVES Despite having potent activity against actively replicating Mycobacterium tuberculosis, isoniazid has very limited activity against dormant bacilli. In order to investigate the lack of bactericidal activity of this drug under conditions leading to mycobacterial dormancy, we studied the transcriptional pattern of M. tuberculosis in different(More)
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