FIG. 1.

Two-dimensional cluster analysis of 30 cytokine levels in 181 HIV-infected subjects. The right-hand dendrogram represents similarities among measured cytokines and the top dendrogram represents similarities among cytokine profiles of different subjects. Centered log-2 cytokine concentrations ranging from −17.2 to 16.6 are indicated in gradients of color, where red indicates higher values and green indicates lower values. Each row represents the values for a cytokine, and each column corresponds to a subject. Cluster 1 (green bar) indicates subjects with the highest cytokine concentrations, cluster 2 (orange bar) indicates subjects with the lowest concentrations, and cluster 3 (purple bar) indicates subjects with intermediate concentrations.