Toxicity of silica nanoparticles depends on size, dose, and cell type

Viability of A549 after 24 h exposure to 10 and 500 μg/mL of SNPs with diameters of 60 nm in diameter. Transmission electron micrograph of A549 cells incubated for 24 h at 200 μg/ml doses with 60 nm SNPs, showing cell morphology and cytoplasmic texture. Inset scanning electron micrographs show the corresponding SNPs.551