CD163 and neoplasm: In a single region of interest, among other cell types, tumor cells (Keratin+), T-helper cells (CD3+CD4+), cytotoxic T cells (CD3+CD8+), regulatory T cells (CD3+FOXP3+, Figure 3A), HLA-DR+ macrophages (CD68+HLA-DR+), CD163+ macrophages (CD68+CD163+), and CD11c+ macrophages (CD68+CD11c+, Figure 3B), were identified.