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Immunohistochemical staining of CK and VIM in OSCC cells. a Similar staining patterns are visualised at each time point: CK staining has no change in the epithelial OSCC cells (arrows, bar = 25 μm); weak staining of VIM is shown in SCC25 and HN5, while VIM is strongly stained in Tca8113 cells before and after the treatment (arrows, bar = 25 μm). Results represent three independent experiments. b Summary of the immunohistochemical staining results
