Fig. 5.

CD73 expression in rectal cancer tissue after chemoradiation therapy. Formalin-fixed paraffin-embedded 4-μm sections were immune stained with polyclonal Ab to human CD73 using REAL EnVision Detection System (DAKO) as described in Methods. The staining intensities were separately evaluated in remnant tumor cells or stroma and divided into high and low expression groups. Four representative cases, a remnant tumor cells low, stroma low b remnant tumor cells low, stroma high c remnant tumor cells high, stroma low d remnant tumor cells high, stroma high were shown