Representative dot plot and histogram from one patient in each group showing CD14⁺/CD91⁺ populations in all 3 groups.

The histograms represent the median CD91 MFI on the CD14⁺ cells (the gate in the dot plot is shown). The mean for the CD91 MFIs on monocytes measured 227.3 in group 1, 148.3 in group 2, and 121.5 in group 3. Differences between the means also demonstrated a significant increase in HSP receptor levels on monocytes derived from patients in group 1. Median MFI on HIV-1–negative controls measured 114.4 ± 18.9 (mean, 125.2).