Alveolar Macrophages

Alveolar macrophages are a specialized type of immune cells found in the alveoli (air sacs) of the lungs. They help to protect the lungs from various environmental insults and keep the lungs healthy. Alveolar macrophages play a crucial role in regulating the inflammatory response to lung infections or exposures to airborne particles, as well as in the repair of damaged alveolar epithelium. Alveolar macrophages also phagocytose and digest large particles and microorganisms (e.g. bacteria, viruses, pollen, and fungi) that enter the lungs, helping to prevent respiratory infections and allergic reactions. As such, alveolar macrophages are essential for optimal lung health and functioning.