COL6 is present in the basement membrane region throughout the lung.

(a) Immunohistochemical staining of COL6 (green) in normal human lung tissue shows deposition of this extracellular matrix molecule in the basement membrane of large and small airways, the alveolar parenchyma and the vascular wall. Nuclei are counter-stained blue. All scale bars are 100μm. Inset represents IgG control.