MRC1 and neoplasm: TAMs, characterized by CD68, CD163, CD206, and TGF‐β, are critical for tumor progression.[17] MDSCs, which are immature myeloid cells that fail to fully differentiate, are categorized into monocytic MDSCs (M‐MDSCs), marked by CD11b+/Gr‐1int/Ly6Chigh/Ly6G−, and granulocytic MDSCs (G‐MDSCs), marked by CD11b+/Gr‐1high/Ly6C−/Ly6Ghigh.