the purpose of this study was to develop and validate a sensitive method for evaluating adenylate cyclase stimulation by thyroid-stimulating antibodies ( tsab ) , based on the measurement of thyroid membrane adenylate cyclase activity in the presence of a non-hydrolyzable gtp analogue , guanyl-5'-yl imidodiphosphate ( gpp ( nh ) p ) .
C0018353
gtp
C0018366
gpp ( nh ) p