Hematoxylin-Eosin (H/E) staining was performed on cell-bearing coverslips to observe the morphological changes of Res-treated THJ-16T, THJ-21T and Nthy-ori 3-1 cells by the method described elsewhere 34 . 3-[4,5-Dimethylthiazol-2-yl]-2,5-diphenyl-tetrazolium bromide (MTT) assay, EdU staining were performed to elucidate proliferative activity and trypan blue cell discrimination assay for cell death rates. Deoxynucleotidyl transferase-mediated dUTP-biotin nick and labeling assay (TUNEL, Beyotime Biotechnology, C1086, Shanghai, China) was used to analyze apoptotic cell death by the methods described previously 33 (link). The cell images were collected under a positive fluorescence microscope (Zeiss, Ax10 Axio, Germany).
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