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. 2009 Feb 6;296(5):H1312–H1320. doi: 10.1152/ajpheart.00977.2008

Fig. 4.

Fig. 4.

The effect of chronic hypoxia on endothelial NO synthase (eNOS) expression in small (<100 μm) and large (400–700 μm) PAs. A: sections of small and large PAs from normoxic (a and b) and chronically hypoxic (c and d) rats immunostained for eNOS. B: quantitative measurement of eNOS immunostaining in small and large PAs from normoxic and chronically hypoxic rats. C and D: representative Western blot (C) and corresponding densitometric analysis (D) showing of eNOS protein expression in control and chronically hypoxic PAs (400–700 μm). β-Actin was probed to confirm equal protein loading. Results are expressed as means ± SE; n = 6 experiments. Scale bar = 50 μm. *P < 0.001 vs. small PA control, #P < 0.01 vs. large PA control.