IgE and IgA levels after instillation of ZnONP at 150 cm2
/rat. (A) IgE levels in serum; (B) IgA levels in serum; (C) IgA levels in BAL fluid. Values are mean ± S.D. n = 4 - 8 for each treatment group. Significance versus vehicle control: * p < 0.05, ** p < 0.01, # p < 0.001.