to test the hypothesis that thyrotoxicosis results in increased target tissue beta-adrenergic receptor densities and correspondingly increased metabolic and hemodynamic sensitivity to epinephrine in vivo , we measured these in 10 normal humans before and after administration of triiodothyronine ( 100 micrograms daily ) for 10 d .
C0001643
beta-adrenergic receptor
C0086418
humans