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. 2009 Jan 19;4(1):e4220. doi: 10.1371/journal.pone.0004220

Figure 2. Antigen dependent and mitogen induced absolute IFN-γ levels by HIV-status and CD4 cell count group.

Figure 2

Horisontal lines represent medians with interquartile range. Dotted lines represent the applied cut-off values as recommended by the manufacturer: 0.35 IU/ml for antigen (ESAT-6, CFP-10, TB7.7) dependent IFN-γ production and 0.50 IU/ml for mitogen (PHA) induced IFN-γ production respectively. The assay is not able to quantify values above 10 IU/ml why values above this limit were assigned the value 10 IU/ml.