Figure 2From: SiO2 nanoparticles induce cytotoxicity and protein expression alteration in HaCaT cellsMorphological changes induced by SiO 2 exposure. HaCaT cells were exposed to 15-nm, 30-nm and micro-sized SiO2 particles at 10 μg/mL for 24 h. Scale bar = 30 μm.Back to article page