On the other hand, at constant adjuvanticity (CG27), the SIINFEKL‐specific CD8+ T cell frequency was decreased when decreasing the antigen pVIII display ratio below 13.6% (Figure S5, Supporting Information), whereas minimal enhancement in the anti‐tumor CD8+ T cell response was observed when increasing the antigen pVIII display ratio to 36.3% (CG27/rEES vs CG27/EESmut, Figure 5E). Here, CD8A is linked to neoplasm.