Fig 4.

Cellular immune response in blood after the VLP booster immunizations. (A) Geometric means of numbers of IFN-γ-secreting PBMCs in the vaccine groups after stimulation with SIV Gag peptides (left) or AT2-inactivated SIV (right) at the indicated time points after the first VLP immunization. ESP, Elispots. (B) Values for each of the macaques. Four- and five-digit numbers are monkey designations. Monkeys positive for the A*01 and the B*17 MHC alleles are marked by asterisks and plus signs, respectively.