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Resveratrol inhibits thyroxine-induced PD-L1 nuclear accumulation in oral cancer cells. OEC-M1 cells were seeded in glass cover slide and were treated with 10−7 M T4, 40 μM resveratrol or their combination for 24 h. Cells were fixed for confocal microscopic analysis of PD-L1 expression (red color) and its nuclear accumulation (purple color, indicated by arrow marker). The nuclei were stained by DAPI as counter staining (blue color).
