Fig. 3
From: Effects of silver nanoparticles and ions on a co-culture model for the gastrointestinal epithelium
Intracellular reactive oxygen species formation. Effect of (a) H2O2 (positive control), (b) AgNO3 and (c) Ag 20 and 200 nm particles on the reactive oxygen species formation. After 14 days in culture Caco-2/TC7, HT29-MTX and the 90:10 co-culture were exposed for 2 h. Error bars represent the mean ± SD of 3 independent experiments performed in triplicate. Significant differences from respective untreated controls are marked with asterisks (* for P < 0.05)