Expression was also detected on a subset of myeloid cells and when these cells were present, CD73 levels were similar to those on tumor cells (Fig. 7B and Fig. S10d)34 Strong staining for CD39 was most commonly observed on myeloid and endothelial cells though as with scRNA-seq data tumor cells also expressed CD39 at lower levels (Fig. 7A, B; Fig. S10e). The gene discussed is ENTPD1; the disease is neoplasm.