Fig. 8. Viability/proliferation of MC3T3-E1 cells grown on test substrates for 1 day and 5 days respectively. (a) MTT assay (n = 3, mean ± SD), *p < 0.05 for GNP-coated alloy versus control, **p < 0.01 for SS and GNP–SS-coated alloy versus control; (b) fluorescent cell staining with LIVE/DEAD Cell Viability/Cytotoxicity Assay Kit (live cells fluorescence green and dead cells fluorescence red). Scale bar: 100 μm.
