Fig. 5
From: Effects of silver nanoparticles and ions on a co-culture model for the gastrointestinal epithelium
Elemental distribution of 31P, 34S and 107Ag (green) in 300 nm cuts. Caco-2/TC7:HT29-MTX cells in 90:10 co-culture were exposed to (b) Ag 20 nm (c) Ag 200 nm and (d) AgNO3 for 24 h while (a) represents the untreated control cells. Scale bar is 5 μm. The color scales indicated are for P and S images. For Ag images, the secondary ion intensity is expressed in green scale