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Figure 2 Effects of intravenous atrial natriuretic peptide (ANP) and nitroglycerin (GTN) on norepinephrine (NE), plasma active renin concentration (PARC), angiotensin II (Ang II), aldosterone (ALD) and endothelin-1 (ET-1). P(ANOVA) indicates the p value for time-group interaction. White bars indicate ANP group and black bars the GTN group. Baseline and 1 H indicate just before and after 1 H starting ANP or GTN. Before stop indicates just before stopping ANP or GTN. p < 0.05, #p < 0.01, *p < 0.001, p < 0.0001: difference between baseline and before stop values (within each group).