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A: relative mRNA expression of epithelial sodium channel (ENaC) α-, β-, and γ-subunits in the cortex of sham and chronic heart failure (CHF) rats as measured by real-time PCR. B: relative mRNA expression of ENaC subunits in the outer medulla of sham and CHF rats as measured by real-time PCR. *P < 0.05 compared with respective sham group.
