Establishment of a Rat Adjuvant Arthritis-Interstitial Lung Disease Model

Figure 3

Masson’s trichrome stain of left lung tissue showing collagenous deposition (blue stain) 21 days after adjuvant injection. (a) Control: no blue fibers are visible in the interstitial tissue. (b) FCA-treated rat: collagen fibers (arrows) and dense inflammatory infiltration are evident. (c) FCA-treated rat: collagen fibers are close to the pleura (arrows).

(a)

(b)

(c)