the catecholamines were bound to aag with the same order of potency for both classes of binding sites : ipr ( kd1 : 100 microm kd2 : 2.2 mm ) greater than ne ( kd1 : 120 microm , kd2 : 6.5 mm ) greater than epi ( kd1 : 140 microm , kd2 : 14 mm ) .
C0007412
catecholamines
C0028351
ne