Bar-dot graph reporting the number of cells per area counted on the different samples. Data are presented as mean s.e.m. For ITO, n = 5, N = 3, no. of cells/area = 20.2 2.6. For rGO, n = 6, N = 3, no. of cells/area = 15.8 1.9. For GO, n = 6, N = 3, no. of cells/area = 17 3.7. For GOx10, n = 6; N = 3, no. of cells/area = 41.8 5.7. n , number of analysed images, N , number of experiments. Statistical significance was calculated via one-way analysis of variance (ANOVA) with Bonferroni post-test. P values are reported in the graph when P 0.05, which was considered significant. No statistically significant differences were observed between ITO and rGO ( P = 0.2), GO and rGO ( P = 0.8) or ITO and GO ( P = 0.5).
