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NO has no effect on caspase 3 in GSCs. Representative Western blot showing the expression of cleaved caspase 3 in GSCs untreated (C) and NO-treated for the indicated times. The level of the active caspase 3 was normalized to β-actin and represented in the graph with respect to the level measured in untreated cells at each time point, to which a value equal to 1 was arbitrarily assigned. The mean ± SEM of the densitometric analysis of 3 experiments is shown.
