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CD8+ T cell responses were measured by IFN-γ ELISpot assay in HLA-B*57+ (black circles) and HLA-B*57− (clear circles) subjects and are expressed as SFC/106 PBMC. (A) Total HIV-specific response. (B) Response directed against Env, Gag, Pol, and Nef proteins. Horizontal bars represent median values.
