Fig. 4From: A new histone deacetylase inhibitor remodels the tumor microenvironment by deletion of polymorphonuclear myeloid-derived suppressor cells and sensitizes prostate cancer to immunotherapyUnresponsive patients for PD-1 treatment had a significantly higher PMN-MDSC infiltration in TME when compared with responsive patients. A Tumor-infiltrating PMN-MDSC cell lineages (CD11b + CD15 + CD33 +) in PD-1-treated PCa samples; scale bar, 20 μmBack to article page