The number and strength of T cell responses detected by IFN-γ ELISPOT do not correspond to viral load or MHC haplotype. (A) Number of positive T cell responses in 26 MCM at 52 weeks postinfection separated into controller, noncontroller, homozygote, and heterozygote populations. (B) Comparison of the number of distinct T cell responses and viral loads at 52 weeks postinfection. (C) Sum of all SIV peptide-specific SFCs per million PBMC separated into controller, noncontroller, homozygote, and heterozygote populations at 52 weeks postinfection. (D) Cumulative (24 + 52 weeks postinfection) chronic-phase T cell responses in 20 MCM separated into controller, noncontroller, homozygote, and heterozygote populations. (E) Comparison of the number of cumulative T cell responses and viral loads at 52 weeks postinfection.