Figure 4: Effect of IDU on plasma levels of sCD14. Levels of sCD14 (ng/ml, y-axis) from Group 1 (non-IDUs, HIV-uninfected, n=13); Group 2 (HIV-1 uninfected IDUs, n=19); Group 3 (HIV-1 infected, viremic, non-IDUs, n=8) and Group 4 (HIV-1 infected, viremic, IDUs n=10) (x-axis). Each of the symbols represents individual data points and the horizontal red line shows the mean for each of the groups.