immunoglobulin g preparations from sera of 30 patients with graves ' disease were tested for the adenylate cyclase stimulation either in the presence or in the absence of gpp ( nh ) p : a significant stimulation was observed in 27/30 patients when the gtp analogue was added to the system , while only 20/30 patients were positive in the absence of the nucleotide .
C0018366
gpp ( nh ) p
C0018353
gtp