Contrary, availability of 89Zr-DFO-CD8a for tumor accumulation was evident and uptake increased from 1.28 ± 0.17 to 2.45 ± 0.28 % injected dose per gram (%ID/g) with increasing dose of CD8a-F(ab)'2 (Figure 1F, Table S1). This evidence concerns the gene CD8A and neoplasm.