Pulmonary toxicity of ZnONP
at 24 h after instillation into lungs of rats. (A-C), BAL cell analysis at 24 h after instillation of ZnONPalt to rats. (A) Number of total cells; (B) number of PMN; (C) number of eosinophils. Levels of LDH (D) and total protein (E) in the BAL fluid at 24 h after instillation of ZnONPalt to rats. Values are mean ± S.D. n = 4 for each treatment group. Significance versus vehicle control (VEH): * p < 0.05, ** p < 0.01, # p < 0.001.