CD4 and neoplasm: Quantitative ROI analysis of 89Zr-DFO-CD4 maximum tumor uptake is depicted in Figure 4B ranked from high to low and revealed uptake levels of 15.6 ± 1.4 (Sa1N), 14.9 ± 0.65 (P815), 11.9 ± 0.74 (4T1), 10.2 ± 0.67 (B16F10), 9.5 ± 0.5 (Renca), 7.65 ± 0.35 (MC38) and 7.53 ± 0.25 (CT26) %ID/g.