CD8A and neoplasm: Results were recapitulated in the CFSE-loaded T-cell experiments, which showed increases in the percentage of proliferating CD3+/CD4+ and CD3+/CD8+ T cells cultured with DCs derived from exposures to basal medium (7.3±1.9% and 2.9±0.059%, respectively), which were not significantly different to proliferation seen in T cells admixed with DCs exposed to supernatant derived from untreated A549 tumour (Figure 5A, B).