Numerically denoted phenotypic marker expression from SPADE analysis of
the myeloid derived suppressor cell (MDSC) subpopulations (annotations
6–24) in the peripheral blood (PB) of normal donors and cancer patients,
and cancer patients’ spleens (Fig.
5). Relative phenotypic marker expression is shown for all three flow
panels (CTLA-4, PD-L1, and enzyme) and ranges from low (blue) to high (red). The
median and range of the phenotypic marker expression can be references in ST 3.