A, B. Tumors from CT26 tumor-bearing BALB/c mice treated with vehicle or TP-16 for 2 weeks were harvested, and tumor single-cell suspensions were analyzed for tumor-associated myeloid cells by flow cytometry analysis. Representative graphs and quantification of F4/80+MHC-II+ immunosuppressive myeloid cells (IMCs)-M1 macrophages (A) and F4/80+CD206+ IMCs-M2 macrophages (B) gated on CD45+CD11b+ myeloid cells (n = 5). 