Fig. 2From: PD-L1 expression in malignant salivary gland tumorsPD-L1 expression in malignant salivary gland tumors. a Association of PD-L1 expression and OS in malignant salivary gland tumors. b Association of PD-L1 expression and OS in TIMCs. OS by PD-L1 positivity was estimated by Kaplan–Meier method. a PD-L1 positivity on tumor membrane (% positive neoplastic cell). b PD-L1 Expression in TIMC (inflammatory cell store)Back to article page