The level of active caspase 3 in GBM cells cultured in an
model. (A) Western blot analysis of the level of active caspase 3 in GBM cells from control group (C), placebo group (Pl), and AgNPs group (AgNPs). (B) Graph showing the optical density values (optical density, OD) obtained for the different bands, expressed in relative terms, defined as the ratio of OD values obtained for band representing active caspase 3 and OD values obtained for actin band. Letters (a, b) mean highly statistically significant differences, P ≤ 0.05. The obtained results are the mean of three independent experiments.