Figure 9: Cytotoxic effect of the MTX/SiO2 nanostructured material at different concentrations in T98G cells after 12 hours of incubation. A) Cells without treatment, B) Cells treated with a concentration of 0.15 mg/ml, C) Cells treated with a concentration of 0.25 mg/ml, D) cells treated with a concentration of 0.5 mg/ml, E) cells treated with 0.75 mg/ml.