the effects of calcium antagonists ( verapamil , diltiazem , and nicardipine ) on beta-adrenergic receptors of cultured cardiac myocytes isolated from neonatal rat ventricle were studied with the hydrophilic ligand [ 3h ] cgp-12177 , which identifies cell surface-bound beta-receptors .
C0034785
beta-adrenergic receptors
C0034800
cell surface