Figure 9From: Effects of long-term low-dose oxygen supplementation on the epithelial function, collagen metabolism and interstitial fibrogenesis in the guinea pig lungSections of peripheral parts of the lungs stained with hematoxylin-eosin. Panels A, B, C, D and E represent pre- and, 2, 4, 8 and 16 week-exposure to 40% oxygen. Neither discernible injury nor architectural disorganization can be seen in any of these groups. Bar = 100 μm.Back to article page