NOS2 and infection: In vitro infection of airway epithelial cells with rhinovirus induces the production of a wide range of antiviral molecules including INFβ [6], [7], β-defensins [8], [9] as well as NOS2 [10], or proinflammatory chemokines and cytokines that attract and activate cells of the immune system, including CXCL8, CXCL5, CXCL10, CCL5 and IL-6 [11]–[13].