Figure 1
![Figure 1](http://media.springernature.com/full/springer-static/image/art%3A10.1186%2F1465-9921-11-123/MediaObjects/12931_2010_966_Fig1_HTML.jpg)
Two-dimensional gel electrophoresis (2-DE) reveals alterations of Hbα and β monomers and Hbα complexes in IPF lungs. (A) A representative 2-D gel for control lung is shown on the left. The enlarged gel positions (B) represent Hbα and β monomers and Hbα complexes (spots 1 and 2) in human control (n = 4), IPF (n = 4) and COPD (Stage IV, n = 4) lung tissue. Lung homogenates were separated by 2-DE (pH6-11) and the protein pattern visualized by silver staining. For patient characteristics see Table 1.