Fig. 5From: Histopathology of the broad class of carbon nanotubes and nanofibers used or produced in U.S. facilities in a murine modelAlveolar fibrillary collagen thickness quantification. A Alveolar fibrillary collagen thickness 84 d post-exposure to CNT/F. Representative micrographs of Picrosirius red stained tissue were as follows: B DM, C MW #3, D MW #6, and E CNF #1. Particle is visibly present in the interstitial walls in D and E. *p < 0.05 versus DM. Scale bars represent mean ± standard errorBack to article page