Alveolar macrophages and lung connective tissue.
D003094:Collagen / Q000096:biosynthesis; D003238:Connective Tissue / Q000502:physiology*; D006801:Humans; D008168:Lung / Q000502:physiology* / Q000503:physiopathology; D008173:Lung Diseases, Obstructive / Q000503:physiopathology*; D008264:Macrophages / Q000502:physiology*; D011650:Pulmonary Alveoli / Q000502:physiology*; D011656:Pulmonary Emphysema / Q000503:physiopathology; D012907:Smoking
D003094:Collagen