( 1 ) following density gradient centrifugation of cardiac ventricular microsomes from rats or guinea-pigs , endothelial plasma membranes migrated at slightly higher density than the sarcolemmal membranes , as verified by endothelial ( angiotensin converting enzyme ) and sarcolemmal markers ( adenylate cyclase , [ 3h ] ouabain binding ) .
C0018787
cardiac
C0018827
ventricular