tritiated norepinephrine ( [ 3h ] ne ) was administered prior to death , after which the hearts were removed and eight segments ( right and left atria , right ventricular conus and sinus , left ventricular base and apex and high and low ventricular septum ) analyzed to determine myocardial ne content and uptake of [ 3h ] ne .
C0018787
hearts
C0225897
left ventricular