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. 2012 Jun 14;6:56–65. doi: 10.2174/1874091X01206010056

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© Feng et al.; Licensee Bentham Open.

This is an open access article licensed under the terms of the Creative Commons Attribution Non-Commercial License (http://creativecommons.org/licenses/by-nc/3.0/) which permits unrestricted, non-commercial use, distribution and reproduction in any medium, provided the work is properly cited.

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Fig. (3) — Tianma enhanced ACh-induced vasorelaxation in endothelium-intact rat thoracic arterial rings (II). Analysis of ACh induced relaxations in PE (10^-6 M) pre-contracted isolated endothelium-intact arterial rings from control and tianma-treated rats. One-year-old rats were treated with or without tianma for three months at ~2.5g/kg/day and the thoracic aortas were isolated. The endothelium-intact arterial rings were first pre-contracted by PE (10^-6 M). Increasing concentrations of ACh were added and then the percentage of ACh-induced relaxation to PE (10^-6 M) contraction was measured as described in the materials and methods. Data points represent means ± SD of measurements in 8 arterial rings from 5 rats of each group (*P < 0.05 compared with the control group).