CD274 and neoplasm: Independently evaluating each subset of CD45-positive tumor-infiltrating immune cell groups, all showed greater than 50% of each cell type (B, T, NK, Mac/Mono/Gr, DCs) expressed PDL1, with approximately two-thirds of the dominant Mac/Mono/Gr population and virtually all (greater than 90%) T cells, B cells, DCs and NK cell population expressing PDL1 (Figure 3E).