Intracellular IFN-γ staining of peptide-specific CD8⁺ T cells in patient no. 8 after 6 and 9 vaccinations.

For details, see legend to Figure 3. In addition, CEA and MAGE-3 peptides were used in this assay. (A) T-cell response after 6 vaccinations. (B) T-cell response after 9 vaccinations. FL-1 represents staining with anti-CD8, FL-2 represents IFN-γ staining.