Figure 2

Amount of silver detected in the lungs and liver by HR-ICP-MS at 24 hours and 7 days after exposure. In the liver, silver could be detected in the animals exposed to 15 nm silver nanoparticles and not in the animals exposed to 410 nm silver particles. For both particle sizes, the amount of silver in the lungs at 7 days after exposure was significantly lower compared to 24 hours after exposure.