Figure 2From: Sub-chronic toxicity study in rats orally exposed to nanostructured silicaDissolution behavior of SAS and NM-202 after digestion in vitro . The content of dissolved silica is given as a weight percentage of the total silica content at concentrations ranging from 50 to 150 μg/ml (n = 6). The dotted lines represent an extrapolated trendline for both samples. LOD: 5 μg SiO2/mlBack to article page