Figure 1.

Detected the PD‐L1 expression of human lung cancer cell lines by flow cytometry. (a) Of the 13 human lung cancer cell lines, each was stained with PE‐CF594‐labeled mouse antihuman PD‐L1 monoclonal antibody (open histograms) or PE‐CF594‐labeled mouse IgG1, κ isotype control (shaded histograms). (b) Each was stained with mouse antihuman PD‐L1 mAb (open histograms) or mouse IgG1, κ isotype control (shaded histograms), followed by staining with a secondary DyLight 488‐conjugated goat antimouse polyclonal Ab.