IGHE and Increased total eosinophil count: Treg cell induction in vivo was also observed for an excretory/secretory protein of Ascaris suum (PAS-1), which inhibited airway inflammation in a murine model of OVA-induced AAI by decreasing eosinophilia and TH2 cytokines in the BAL, as well as OVA-specific serum IgE (104).