Similarly, fewer red fluorescence signals of Gr-1 (Ly6G/Ly6C; the marker of MDSCs) and FoxP3 (forkhead box P3; the marker of Tregs) were observed in the tumor tissues from HDDA-treated mice (Fig. 5j), indicating the decreased number of MDCSs and Tregs. Here, FOXP3 is linked to neoplasm.