Fig. 5From: Enhanced IFN-γ, but not IL-2, response to Mycobacterium tuberculosis antigens in HIV/latent TB co-infected patients on long-term HAARTCorrelation of M. tuberculosis antigen-specific cytokine responses and duration of HAART. The correlation between PPD and ESAT-6 specific frequency of IFN-γ (a) and IL-2 (b) secreting cells and duration of HAART among the HAART-treated participants (n = 31). Spearman correlation was used to calculate correlation coefficients (rs) and p valuesBack to article page