PATHOLOGY

Detailed explanation-1: -Alveolar macrophages are the most abundant innate immune cells in the distal lung parenchyma, located on the luminal surface of the alveolar space. They are the first to encounter incoming pathogens and pollutants and to help orchestrate the initiation and resolution of the immune response in the lung.

Detailed explanation-2: -These macrophages “eat” the dust particles that escape from mucus in the higher parts of the respiratory tract, as well as other debris that is not trapped and cleared out by your mucus.