Figure 6From: Particle size dependent deposition and pulmonary inflammation after short-term inhalation of silver nanoparticlesLight microscopic images of cells in the broncho-alveolar lavage fluid of the rats at 24 hours after exposure. A. Animal exposed to clean air. B. Animals exposed to 15 nm silver nanoparticles. C. Animals exposed to 410 nm silver particles. There is a significant influx of neutrophils in the lung fluid of the animals exposed to 15 nm silver nanoparticles.Back to article page