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Kir2.1 protein expression. (a) Western blot analysis using a polyclonal antibody against Kir2.1 protein. Although the specific band at approximately 42 kDa was present in both samples, its density was greater in the AdESERCA1-Kir2.1–injected guinea pig heart. (b) The relative expression of Kir2.1 normalized per actin protein for the same Western blot. Kir2.1 expression in the AdESERCA1-Kir2.1–injected heart was 30% higher than in control.
