Fig. 1From: Programmed death-ligand 1 expression associated with molecular characteristics in surgically resected lung adenocarcinoma a Positive programmed cell death-ligand 1 (PD-L1) immunohistochemical staining in a patient with adenocarcinoma. b Negative PD-L1 immunohistochemical staining in another patient with adenocarcinomaBack to article page