Pulmonary Infections Pulmonary Host Defense Mechanisms Nasal hair and Turbinates Interference from resident flora Mucociliary apparatus and cough Immunoglobulin (gg, IgM, igA) Complement production Cytokines (IL-l, TNF) Alveolar macrophages Polymorphonuclear leukocytes Cell-mediated immunity10 Pulmonary Host Defense Mechanisms Nasal hair and Turbinates Interference from resident flora Mucociliary apparatus and cough Immunoglobulin (IgG, IgM, IgA) Complement production Cytokines (IL-1, TNF) Alveolar macrophages Polymorphonuclear leukocytes Cell-mediated immunity Pulmonary Infections