Airway fibrosis at 21 days post-exposure to MWCNTs is increased by pre-sensitization of mice with HDM allergen.

<p>(A) Representative lung sections stained with Masson’s trichrome stain in mice sensitized to HDM and then exposed to MWCNTs. Images taken at 10X magnification. (B) Semi-quantitative morphometric analysis of airway fibrosis. Data is pooled from 4–8 individual airway measurements. Statistical analysis performed using an unpaired student t-test. *P < 0.05 compared to control animals.