Fig. 2.

Immunohistochemical detection of Foxp3-positive cell in breast carcinoma tissue. Photos demonstrate each group of representative histopathology image. The ratio of Foxp3-positive cells/TILs was categorized by median value (median 0.097) into high and low ratios of Foxp3 (Foxp3 high and low). a Control. b Foxp3 low in tumor infiltrating lymphocytes (Foxp3-positive cell/TIL; 0.032). c Foxp3 high in tumor infiltrating lymphocytes (Foxp3-positive cell/TIL; 0.11). d–f Hematoxylin/eosin staining is shown in a–c. Magnification for all, ×40 (scale bar 20 μm). Foxp3 forkhead box P3, TILs tumor-infiltrating lymphocytes