Fig. 4From: PD-L1 is upregulated by EBV-driven LMP1 through NF-κB pathway and correlates with poor prognosis in natural killer/T-cell lymphoma a Concentration of serum soluble PD-L1 in patients with natural killer/T-cell lymphoma (NKTCL) and healthy individuals. b Correlation between concentration of serum soluble PD-L1 (ng/ml) and PD-L1 expression in tumor tissues (%) in patients with NKTCLBack to article page