Figure 2

Fibrosis assessment in OSA and Sham rats. A. Representative Picrosirius-stained photomicrographs of atrial, right ventricle (RV) and left ventricle (LV) sections from Sham (n = 14) and OSA (n = 16) rats. Atria and ventricular samples were stained in different days, and pictures obtained at different magnifications, so results from atria and ventricles should not be compared. B. Quantification of collagen fraction in the atria, RV and LV. (Mean ± SEM, *P < 0.05).