Programmed death receptor ligand 1 (PD-L1) expression levels on patient cells.

<p>(A) PD-L1 expression on myeloid (CD11b+) cells from patients (HR n = 11, LR n = 6) and HCs (n = 21) as assessed by flow cytometry. (B) Median fluorescence intensity (MFI) of PD-L1 on CD11b cells. (C) MFI of PD-L1 expression on CD11b cells from a representative healthy control (filled histogram) and CML patient (thick line), the thin line represents the isotype control. (C) Percent PD-L1 expressing CD34 cells of all live cells in HCs (n = 21), LR (n = 6) and HR (n = 11) patients. Statistically significant differences between groups are reported as P-values in the figures.