Luma da Costa Loureiro et al.
Molecular immunology, 122, 163-172 (2020-05-04)
Pulmonary surfactant plays an important role in lung surface tension, defense against invading pathogens, and immune response. Furthermore, alveolar macrophages (AM) that comprise the front line of immune defense against inhaled microorganisms are covered by a layer of pulmonary fluid.