Fig. 1

SFN inhibited viability and changed cell morphology of U251MG cells. a U251MG cell lines were treated with 0, 10, 20 and 40 µM SFN for 24 h. Cell viability was examined using MTS assay. Results were expressed as a percentage of control, which was considered as 100 %. Data are presented as the mean ± SD of three independent experiments. b Morphological changes of U251MG cells treated with different concentrations of SFN for 24 h (magnification, ×40). The cells were evidently reduced in size and their margins were unclear compared with the control group