5 addition of the purine nucleotides adp , atp , gdp or gtp ( final concentration 10 microm ) , either alone or in the presence of 1 mm ca2+ or 1 mm mg2+ , had no effect on the binding of [ 3h ] -dihydroergocryptine or on the competitive affinity of adrenaline or noradrenaline .
C0014563
adrenaline
C0028351
noradrenaline