Figure 2.

Impact of AuNCs on cell numbers. (A) U251N cells were treated with Au₁₅SG₁₃ for 72 hours with the concentrations indicated. Cells were identified with Hoechst 33342 staining of the nuclei as described in the Methods section. (B) Upon incubation with different AuNCs, cell numbers were quantified and results were normalized to vehicle controls. Graphs depict the average ± SEM for three independent experiments. Significant differences between the vehicle control and AuNC-treated cells are marked. *, p<0.05; ***, p<0.001.