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Enzymatic activity of PKA in ventricular myocytes from control, Ovx, and Ovx+E2 rats. (a) PKA activity. The activity of PKA was measured with/without added cAMP (5 μM) (b) cAMP-induced activity. The cAMP-induced PKA activity was defined as the difference in PKA activity with and without 5 μM cAMP. Values are expressed as mean±s.e.m. of triplicate measurements from three hearts in each group. *P<0.05 vs control group.
