Fig. 7

Relaxation in response to increasing concentrations of DP, Hy-DP, 5-uRCK and Hy-DP/5-uRCK mixtures in rat aortic rings. The concentration–response curves show the relaxation effects of DP, Hy-DP, 5-uRCK and mixtures of Hy-DP and 5-uRCK on rat thoracic aortae precontracted with PHE in the presence of functional endothelium (a). Summary of the EC₅₀ values of different extracts with regard to the relaxation of endothelium-intact aortic rings precontracted with PHE (b). All values are expressed as the means ± SEMs