In Vitro and In Vivo Short-Term Pulmonary Toxicity of Differently Sized Colloidal Amorphous SiO₂.

For the smaller 9 and 15 nm SiO 2 , moderately significant responses were observed at the highest concentration (45 μg/mL; p -values ≤ 0.01 and ≤0.05, respectively) ( Figure 1 and SI; Table S2 ). 2.3.2.

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