Fig. 4From: Endogenous angiotensin II has fewer effects but neuronal nitric oxide synthase has excitatory effects on renal sympathetic nerve activity in salt-sensitive hypertension-induced heart failureBrain-tissue activity of neuronal nitric oxide synthase (nNOS) in the brainstem (a) and diencephalon (b) of high-salt-loaded Dahl rats (CHF-DSS) and regular-salt-diet Dahl rats (control). Enzyme activity was expressed as 1,000 cpm/min/μg of enzyme protein. Values are expressed as mean ± SE. **P < 0.001 versus controlBack to article page