Fig. 1
![Fig. 1](http://media.springernature.com/full/springer-static/image/art%3A10.1186%2Fs40880-017-0262-z/MediaObjects/40880_2017_262_Fig1_HTML.gif)
Kaplan-Meier overall survival (OS) and progression-free survival (PFS) curves of patients with diffuse large B-cell lymphoma (DLBCL) according to the expression of programmed cell death-ligand 1 (PD-L1) in tumor cells and microenvironment. a, b Patients with PD-L1 expression in tumor cells had significantly lower 5-year OS rate (PÂ =Â 0.02) and 5-year PFS rate (PÂ <Â 0.01) compared with patients without PD-L1 expression in tumor cells. c, d The 5-year OS rate (PÂ =Â 0.21) and 5-year PFS rate (PÂ =Â 0.26) were similar between patients with and without PD-L1 expression in tumor microenvironment