Fig. 2

Baseline (pre-treatment) expression of PD-L1 as a percentage of parental classic subset. a Representative flow cytometry plots of PD-L1 expression in CD4+ T cells, B cells, cDC, and MDSC. b In 28 patients prior to avelumab therapy, expression of PD-L1 was measured by flow cytometry for nine classic subsets as a percentage of total PBMC, with graphs displaying median and interquartile range