Fig. 10From: Histopathology of the broad class of carbon nanotubes and nanofibers used or produced in U.S. facilities in a murine modelHuman fibroblast in vitro cell viability (A), collagen-1 production (B), α smooth muscle actin production (C), and TGFβ1 secretion (D) following treatment with CNT/F at 0–20 µg/cm3 for 24 h. *p < 0.05 versus DM. Scale bars represent mean ± standard errorBack to article page