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. 2021 May 31;11:681629. doi: 10.3389/fonc.2021.681629

Figure 2.

Figure 2

Pro-Tumor Immune Cells. CD66, CD66b, and CD15 are human specific markers. Gr-1 represents both Ly6C and Ly6G, therefore does not distinguish the MDSC subtypes, MDSCs are monocytic when Ly6C+ and granulocytic when Ly6G+. Most of the markers available for pro-tumor immune cells are surface receptors and ligands, exceptions listed here include the intracellular protein Arg1 and the transcription factor FOXP3.