In contrast, mIHC-F of hPD-L1-KLN205 tumor sections showed highly significant increases in CD8+ T cells and reductions in FoxP3+ Tregs and PD-L1 expression in PDI-1-treated mice compared with vehicle-treated mice ( Figures 5D, E ).
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A Small Molecule Antagonist of PD-1/PD-L1 Interactions Acts as an Immune Checkpoint Inhibitor for NSCLC and Melanoma Immunotherapy.
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