Figure 3From: SiO2 nanoparticles induce cytotoxicity and protein expression alteration in HaCaT cellsViability of HaCaT cells after 24-h exposure to 15-nm, 30-nm or micro-sized SiO 2 particles. Values were mean ± SD from three independent experiments. *p < 0.05, **p < 0.01 vs control cells; #p < 0.05 vs cells exposed to 30-nm SiO2 particles; &p < 0.05, &&p < 0.01 vs cells exposed to micro-sized SiO2 particles.Back to article page