Figure 8From: Distribution and fibrotic response following inhalation exposure to multi-walled carbon nanotubes Morphometric determination of fibrillar collagen thickness response to inhaled MWCNT exposure. The average thickness of fibrillar collagen in the alveolar septa was increased by approximately 70 percent by 336 days post-exposure. Asterisks significantly different from day 1, p < 0.05. (Mean ± S.E., N = 6).Back to article page