Clinical Significance of PD-L1 Expression in Both Cancer and Stroma Cells of Cholangiocarcinoma Patients

2019 
Background The clinical significance of programmed death 1 and its ligand (PD-L1) as therapeutic targets has been reported previously. This study aimed to investigate the clinical impact of PD-L1 expression in cancer and stroma cells in cholangiocarcinoma (CCA).
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