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. 2021 Oct 14;15(6):257. doi: 10.3892/mco.2021.2419

Figure 1.

Figure 1

Immunohistochemical staining of CD4, CD8, Foxp3, CD33, PD-L1, PD1, LAG3, TIM3, OX40, ICOS and IDO1 in colorectal cancer samples (magnification, x200; scale bar, 100 µm; blue, nuclear staining; brown, positive staining). TC, tumor cell; IC, immune cell; Foxp3, forkhead box p3; PD1, programmed cell death 1; PD-L1, PD1 ligand 1; TIM3, T-cell immunoglobulin mucin family member 3; LAG3, lymphocyte-activating 3; OX40, tumor necrosis factor receptor superfamily, member 4; ICOS, inducible T-cell costimulator; IDO1, indoleamine 2,3-dioxygenase 1.