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. 2020 Apr 20;11:342. doi: 10.3389/fphys.2020.00342

FIGURE 2.

FIGURE 2

Grade of right ventricular hypertrophy (RVH): Ad libitum (AL) and caloric restriction (CR) groups on day 30: normoxic group (NX), chronic intermittent hypoxia group (CIH), and chronic hypoxia group (CH). (A) Expressed as Fulton’s index [right ventricle (RV) weight/(left ventricle (LV) weight + septum weight)]. (B) Ventricles (RV+S+LV)/BW ratio. (C) Hematoxylin and eosin staining of the slices of the RV and (D) of the cardiomyocyte area of the RV. The values are the mean (x¯) ± standard error (SE). p < 0.05: hypoxia-exposed vs. NX; #p < 0.05: CIH vs. CH. p < 0.05: AL vs. CR.