NT5E and neoplasm: Regarding the total number of B220+CD39+CD73+ cells in the tumor, a fourfold significant (p < 0.0001) increase from day 14 (5.78 × 104 ± 2.31 × 104 cells, n = 5) to day 21 (4.51 × 105 ± 1.19 × 105 cells, n = 7) was detected (Figure 5D).