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Densitometric analysis of the Western blot for SERCA2a, sodium-calcium exchange (NCX), phospholamban (PLB), phosphorylated phospholamban (PLB-phospho-Ser16), SERCA/PLB ratio, isoforms α1 of Na+-K+ ATPase, and α2 of Na+-K+ ATPase protein expression in the hearts from control and SB-treated rats. *p < 0.05 by Student's t-test. Number of animals used is indicated in parentheses. Representative blots are shown.
