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Chamber-specific norepinephrine (NE) and neuropeptide Y (NPY) depletion in failing right ventricles (RVs) from patients with pulmonary arterial hypertension (PAH). Shown are ventricular free wall tissue NE and NPY levels from a subset of hearts described in Figure 5 (adapted from data in Bristow et al.25). PPH: patients with PAH; LV: left ventricle.
