Overexpression of connective tissue growth factor WISP-1 in Chinese primary rectal cancer patients

Figure 1 Representative slides showing the immunohistochemical staining of WISP-1 in rectal tissues (× 400). A: strong WISP-1 immunoreactivity was observed in the cytoplasm of rectal carcinoma tissue; B: weak WISP-1 immunoreactivity was also detected in the cytoplasm of apparerently normal adjacent rectal tissues; C: negative control slide with PBS was not positively stained in rectal carcinoma tissues.