MRC1 and neoplasm: Furthermore, the results from immunofluorescence staining further confirmed the above findings, M1-type macrophages that showed positive staining with antibodies to CD11c and F4/80 were increased in tumor sections from CHA-treated mice (Fig. 5G,I), while M2 macrophages infiltrating into tumor sections that immunostaining with CD206 and F4/80 were significantly reduced by CHA treatment (P ≤ 0.05, P ≤ 0.01) (Fig. 5H,J).