Differential Expression of Prostaglandin I2 Synthase Associated with Arachidonic Acid Pathway in the Oral Squamous Cell Carcinoma

Figure 4

Analysis of ALOX12B and PTGIS proteins expression in tumor and non-tumor tissue by Immunohistochemistry. I: Expression of ALOX12B protein; the arrows show weak labeling (brown staining) of non-tumor squamous cells in (a) and OSCC cells in (b). II: Expression of PTGIS protein; the arrows show moderate labeling (brown staining) of non-tumor squamous cells in (a) and weak labeling of OSCC cells in (b).