we investigated the binding characteristics of agonists to alpha 1- and beta-adrenergic receptors of intact liver cells , broken rat liver cell membranes , and detergent-solubilized preparations under varying experimental conditions , focusing on the different `` '' states '' '' of the receptor for agonists and the regulation of these states by temperature and guanine nucleotides .
C0034785
beta-adrenergic receptors
C0007603
cell