title: Lung macrophages: how many kinds are there? What do they do?
authors.affiliation: Respiratory Biology Program, Harvard University, School of Public Health, Boston, Massachusetts 02115.
authors.forename: J D
authors.initials: JD
authors.lastname: Brain
mesh_terms: D001992:Bronchoalveolar Lavage Fluid / Q000166:cytology; D002452:Cell Count; D003239:Connective Tissue Cells; D006801:Humans; D008168:Lung / Q000166:cytology*; D008264:Macrophages / Q000502:physiology*; D011650:Pulmonary Alveoli / Q000166:cytology