Figure 1: Comparison of BTG2 response induced by TiO2 and PEG–TiO2 NPs compared to the control (cells not exposed to NPs). Cells were exposed to 10 μg/mL of either TiO2 or PEG–TiO2 NPs for 48 h. Each column was produced from at least 3 replicate measurements. All values are presented as mean ± S.D. (n ≥ 3).