Abstract:The stimulation-evoked 3H-overflow from rabbit isolated ear arteries preincubated with 3H-noradrenaline was studied. Three strips were derived from each central artery. The strips were incubated (30 min.) with 3H-noradrenaline (10(-7) M) and the spontaneous 3H-outflow and stimulation-evoked 3H-overflow were followed by fractional collection. After a wash-out period (75 min.), the strips were stimulated (225 mA; 150 monophasic pulses; 3 Hz; 0.5 msec.) several times. The initial stimulation-evoked 3H-overflow (S… Show more
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