Fig. 6From: Effect of Surface Functionalization on the Cellular Uptake and Toxicity of Nanozeolite AInternalization (a) and retention (b) of unmodified and modified nanozeolites BaA in HeLa cells. Nanozeolites are ranked according to the size of coating molecule. Data are expressed as a mean ± SD from three independent experiments. Statistical analysis of the data is presented in the Additional files 4: Table S1 and 5: Table S2Back to article page