Fig. 4From: Tumor–stroma ratio predicts prognosis and PD-L1 expression in hepatocellular carcinomaImmunohistochemical study of PD-L1. For the stroma-low group (A 40 × magnification) and stroma-high group (B 40 × magnification), chi-square analysis of the difference between the two groups (C P = 0.03)Back to article page