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Airway epithelial cells act through multiple mechanisms to function as an important component of the pulmonary defence strategy that is crucial to the maintenance of immune homeostasis. Dendritic cells are uniquely potent inducers of immune responses and it is increasingly clear that epithelium has the capacity to modulate the functional activity of dendritic cells, and vice versa, through production of a diverse array of mediators. Bidirectional interactions between epithelial cells and dendritic cell networks can thus impact upon the development and progression of immunity/tolerance in respiratory tissues. In this brief review we highlight the most recent advances in understanding how airway epithelial/dendritic cell interactions contribute to allergic disorders. [ABSTRACT FROM AUTHOR]