in resting conditions , no significant differences in plasma 6-keto-pgf1 alpha , pge2 , or txb2 concentrations were found among coronary sinus , aorta , and peripheral venous blood and no transcardiac gradient existed ( mean : +0.4 +/- 1.2 pg/ml for 6-keto-pgf1 alpha , +0.1 +/- 0.6 pg/ml for pge2 , and -0.4 +/- 9.9 pg/ml for txb2 ) .
C0032105
plasma
C0229664
peripheral