glucagon-stimulated adenylyl cyclase was reduced in uremia to 75-80 % of control levels ( p less than 0.05 ) , in the presence or absence of saturating levels of guanosine triphosphate ( gtp ) and 5'-guanylylimidodiphosphate [ gmp-p ( nh ) p ] .
C0018353
guanosine triphosphate
C0018366
guanylylimidodiphosphate