The alveolar macrophage.
D000818:Animals; D006801:Humans; D008171:Lung Diseases / Q000473:pathology; D008264:Macrophages / Q000276:immunology / Q000502:physiology*; D011650:Pulmonary Alveoli / Q000166:cytology* / Q000473:pathology; D011656:Pulmonary Emphysema / Q000473:pathology; D012907:Smoking