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Effect of chloroethylclonidine on the concentration-response curve to noradrenaline in aorta from Wistar, WKY and SHR rats. Aortic rings from Wistar, WKY or SHR rats were incubated with increasing concentrations of chloroethylclonidine, after 45 min vessels were thoroughly washed and then subjected to a concentration-response curve to noradrenaline. Results represent the means±s.e.mean of 4–6 different animals. The effect of 30 μM chloroethylclonidine is omitted for clarity.
