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Concentration-response curves to noradrenaline obtained from intact thoracic aorta rings taken from animals exposed to ethanol consumption and/or stress, in the absence or presence of L-NAME (10-4 M), indomethacin (10-5 M) or yohimbine (10-6 M). Values are expressed as means ± SEM. The number of independent determinations was 8-10. *Indicates a significant difference (p < 0.05) in relation to the control animals.
