Nanoemulsion nasal adjuvant W805EC induces dendritic cell engulfment of antigen-primed epithelial cells

► Facilitates antigen uptake by epithelial and dendritic cells. ► Promotes engulfment of epithelial by dendritic cells. ► Augments antigen transfer from epithelial to dendritic cells. ► Induces maturation of dendritic cells. ► Contributes to cell cycle arrest and apoptosis.