Figure 2.

Tumor CD274 and PTEN expression in colorectal cancer. Tumor CD274 expression was evaluated based on immunostaining in the cytoplasm and membrane of tumor cells. Tumor CD274 expression was interpreted as negative (a), low (b), or high (c) according to membranous and cytoplasmic intensity. Tumor PTEN expression was evaluated based on immunostaining in the cytoplasm and nuclear of tumor cells. Cytoplasmic and nuclear PTEN expression level was classified as lost (d) or intact (e) according to cytoplasmic and nuclear intensity. Scale bars represent 50 μm