Fig. 5From: Autophagy deficiency exacerbates acute lung injury induced by copper oxide nanoparticlesCuONPs instillation caused elevation of copper ions in lung tissue of mice. Mice were intratracheally instilled with vehicle, 1.5, 2.5 or 5 mg/kg CuONPs, respectively for 3 days. The concentrations of copper ions in the mice lung tissues were determined. *indicates p < 0.05 compared with vehicle groupBack to article page