Figure 4From: Granulocyte-colony stimulating factor producing rectal cancerImmunohistochemical staining. a) Immunohistochemical staining with a specific monoclonal antibody against recombinant human G-CSF was positive in the cytoplasm of undifferentiated carcinoma cells (×400). b) The well-differentiated part of the adenocarcinoma was not stained with the G-CSF antibody (×400).Back to article page