Presumably, the ablation of airway eosinophilia by As2O3 results from a collective effects of NF-κB inhibition such as a reduced specific IgE secretion, chemokine expression and Th2 cytokine production as well as an altered eosinophilic cytoskeletal rearrangement [35,36]. This evidence concerns the gene NFKB1 and Increased total eosinophil count.