Innate defences | Mucociliary clearance, epithelial barrier function, production of antiviral and antimicrobial proteins by respiratory epithelium |
Phagocytic activity of small alveolar macrophages | |
Antigen-presenting activities of pulmonary dendritic cells | |
Antiviral activities of plasmacytoid dendritic cells | |
Antitumour and antiviral activities of natural killer cells | |
Adaptive defences | Production of specific antibodies |
Cell-mediated immunity (production of interferon-γ) |