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The effect of 10 mg/kg propranolol (β-adrenergic antagonist) on leptin release. The number of animals (n) = 8 in the saline-injected group, n = 10 in the propranolol-treated animals, n = 9 in the saline + propranolol-injected animals, and n = 13 in the propranolol + LPS-treated rats. *, P < 0.05 vs. saline.
