Figure 5From: Distribution of silver in rats following 28 days of repeated oral exposure to silver nanoparticles or silver acetate Transmission electron micrograph of an intestinal villus (ileum) from a silver acetate exposed rat. Transmission electron micrograph of unstained ultra-thin sections showing granules a) in a lysosome (Ly) within a macrophage in the lamina propria and b) in the basal lamina (BL) of the epithelium.Back to article page