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Protection by 5-methylurapidil and BMY 7378 of noradrenaline-induced contraction after chloroethylclonidine treatment in caudal arteries from spontaneously hypertensive rats. Caudal rings were incubated with 5-methylurapidil or with BMY 7378 before chloroethylclonidine exposure, then subjected to a concentration-response curve to noradrenaline. Data represent the means±s.e.mean of three different animals. *P<0.05 vs chloroethylclonidine.
