Fig. 2

Principle component analysis of plasma concentrations of microbial translocation markers and cytokines. The plot shoes serum cytokine signatures of the four patients groups. The prediction ellipses represent 0.95 probability that a new observation from the same group will fall inside area. The ellipses for the co-infected and HBV groups appear to be distinct from those of the HIV mono-infected and control groups. The x and y-axis show principal component 1 and principal component 2 that explain 44.3% and 10.1% of the total variance observed, respectively