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Contractile responses to α-adrenoceptor activation in superior mesenteric arteries and mesenteric resistance arteries from untreated (N=7, 9) and ouabain-treated (N=7, 9) or losartan-treated (N=7, 7) and ouabain plus losartan-treated (N=8, 8) rats. Results (means±s.e.m.) are expressed as a percentage of response elicited by KCl. ANOVA (two-way): +P<0.05.
