Oxidative Stress - drug effects, Epithelial Cells - drug effects, Zinc Oxide - toxicity, Pulmonary Alveoli - drug effects, Zinc Oxide - administration & dosage, Zinc - analysis, Zinc - pharmacokinetics, Intracellular Space - metabolism, Epithelial Cells - metabolism, Metal Nanoparticles - toxicity, Inhalation Exposure - analysis, Pulmonary Alveoli - cytology...