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Inflammatory response induced in normal skin (a) and lung (b) cells at 24 and 48 h exposure to 100 and 200 μg/mL of the two TiO2/RGO nanocomposites samples (A and B) and commercially available TiO2 NPs (P25), as shown by nitric oxide (NO) released in the media. Data are calculated as means ± standard deviation (SD) (n = 3) and showed relative to control (untreated cells).
