Figure 2From: Immunity against Mycobacterium tuberculosis and the risk of biologic anti-TNF-α reagentsInvasion of mycobacterium bacilli and the process of the onset of disease. The relationship between cytokines and immunoregulatory cells. Abbreviations: TB, tuberculosis; IFN, interferon; TNF, tumor necrosis factor; CTL, cytotoxic T lymphocytes.Back to article page