Figure 2
From: Influence of HTLV-1 on the clinical, microbiologic and immunologic presentation of tuberculosis
TNF-α and IFN-γ production with or without stimulus with PPD. TNF-α and IFN-γ production was determined by ELISA in supernatants of PBMC culture from co-infected patients and patients with tuberculosis only unstimulated (A and C) or stimulated with PPD (B and D). Results of PPD stimulated cultures represent values subtracted from the IFN-γ production in unstimulated cultures.