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Figure 4 Effects of phenylephrine (PE) treatment (7 days) on myocardial neuropeptide Y content in nontransgenic littermate control (NLC) mice and transgenic mice with cardiac targeted overexpression of the wild-type {alpha}1B-AR (Tg{alpha}43). Shown is the mean ± SEM of 6 to 10 mice in each group. *p < 0.05 versus sham-treated mice; #p < 0.05 versus NLC mice. White bar = NLC; black bar = Tg{alpha}43.