Cell death induced, via apoptosis (yellow) and necrosis (grey), in HSC cells after 48 h treatment with varying concentrations AgNO3 (i.e. Ag+ ions), as well as free peptides in culture medium (3.2 μM RGD and 4 μM NLS). Values expressed as mean ± standard deviation of three independent experiments. Statistical significance, with respect to control, indicated by * (p < 0.05).