Fig 2. T cell responses to Pk antigens.

Frequencies of Pk Ag-specific CD4+ and CD8+ T cells in the blood of animals inoculated with 5x10⁶ PFU of each of the four RhCMV/PK4 recombinants (A) or ΔRh186-9/PK4 recombinants (B) at day 0 and with RhCMV/PK4 on days 98 and 189. The percentage of CD4+ or CD8+ T cells (corrected for memory T cells) responding to each of the four Pk antigens were measured by ICS using overlapping peptide pools at the indicated days. T cell responses are shown for each antigen in each individual animal over time.