steady state binding of ( - ) - [ 3h ] dihydroalprenolol to sites in frog erythrocyte membranes , a model system for adenylate cyclase-coupled beta-adrenergic receptors , displays characteristics consistent with negative cooperativity among the beta-adrenergic receptors : scatchard plots are curvilinear with upward concavity and slopes of hill plots are consistently less than 1.0 .
C0034783
adrenergic
C0034785
beta-adrenergic receptors