Fig. 1From: Role of IDO expression in patients with locally advanced rectal cancer treated with preoperative chemoradiotherapyIndoleamine-pyrrole 2,3-dioxygenase (IDO) and programmed death-ligand 1 (PD-L1) expression in patients with locally advanced rectal cancer who received preoperative chemoradiotherapy. a IDO-positive expression in tumor cells (× 200). b PD-L1-positive expression in tumor cells (× 200). c Correlation between IDO and PD-L1 expressionBack to article page