HSP depletion with radicicol decreases responses. Results from 3 patients (patients 2, 4, 10) in whom radicicol was used are shown. Median and range are shown for experiments in 3 KS patients using 10 000 stimulator monocyte-derived DCs (titration results with a changing number of stimulators, as for Figure 6, are not shown). δ-cpm is shown at the top, and stimulation indices are shown on the lower graph. These results are not included in Figure 6. KS lysates in all 3 patients were allogeneic.