ACTH “big ACTH”, 175 “little ACTH”, 175 Acetyl strophanthidin, radioimmunoassay, 221 Adenylate cyclase activity, measurement by radioimmunoas8ay, 312 beta-Adrenergic binding sites catecholamine assay vehicle, 259 heart muscle membrane fractions, 259 Adrenergic receptors, current concepts, 259 alpha-Adrenergic receptors, catecholamines, 261 beta-Adrenergic receptors, catecholamines, 261 Aldoster...