Current status and advance of lung macrophage research

Lung is an important organ of the human body and is responsible for the gas exchange function.Another characteristic of the lung is that it is connected to the outside world, and every day a large amount of inorganic and organic particles in the air enter the lung.So there is a perfect and special immune environment in the lung.In this environment, lung macrophages play an important role.This review will discuss some of the advances in the classification, originating, function, and acquisition of lung macrophages. Key words: Lung macrophage; Alveolar macrophage; Pulmonary interstitial macrophages