the cardiac arteriovenous increment in endogenous dhpg ( 137 % ) far exceeded that of the other beds ( 49 % , 26 % , 39 % , and -19 % , respectively ) , and radioactive dhpg in the great cardiac vein exceeded arterial levels by 113 % , whereas in the other beds , arterial radioactive dhpg exceeded venous levels .
C0018787
cardiac
C0226659
great cardiac