Interpretation of Virus-induced Changes in the Shape of Hemagglutination-Inhibition Curves with Egg-White Inhibitor

Abstract

The efferent arteries of the carotid sinus were ligated and the cephalic end of the common carotid was connected with a Statham pressure transducer. Expts. showed that l-norepinephrine and 1-epineph-rine applied to the carotid sinus induce a contraction of the arterial wall of this area. This contraction provokes the stimulation of the carotid sinus pressoreceptors and thus the reflex fall of the systemic arterial pressure observed in previous expts.