Figure 1.

Effect of the citrate-covered gold nanoparticles (cit-AuNP) on the GL261 glioblastoma cells growth curve. Cit-AuNP in different concentrations (0.01%, 0.03%, 0.1%, 0.3%, or 1%) dissolved in culture medium or culture medium alone (control group) were incubated along with the glioblastoma GL261 cells for up to 96h. Number of GL261 cells were counted 24, 72 and 96h after cit-AuNPs incubation or cell culture medium incubation. No difference was observed after incubation with cit-AuNP compared to the control group (P > 0.05). Results are average of five different assays. Not significant, n.s.