Dietary Flaxseed Oil Protects against Bleomycin-Induced Pulmonary Fibrosis in Rats

Figure 2

Qualitative evaluation of the pathological scores of the various treatment groups at each time interval point. (Staining: Masson’s trichrome). The symbols represent the mean of all the rats in each group. Scoring of pathology: Ranges from 5: borderline damage, progressing to a high of 40: very severe and extensive damage. Scoring of stain intensity: estimated area of blue stain on a series of high-power fields with trichrome staining. Abbreviations: Bronch. Inflam.: Bronchial Inflammation with loss of epithelium, loss of cilia, and increased number of inflammatory cells. Vasculitis: Thickening  of the media of vessels and reduction of lumen patency. Septal collagen: Presence of blue stained fibers on trichrome stain. Interstitial fibrosis: Presence of fibers in the septa stained by trichrome.