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Histogram display of ELISpot SFU data. Cumulative anti–HIV-1 IFN-γ response for (A–G) HESN and SC-BI subjects and (A) LRHCs. Bins are customized to the range of SFUs observed for each antigen, except for the first four bins. The first four bins are consistent for all antigens and correspond to nonresponse (0), 1–10, 11–54, and 55–100 SFUs. Means are calculated inclusive of zero SFU values for nonresponders.
