dipyridamole and nitrobenzylthioinosine ( nbti ) , agents that block the intracellular uptake of adenosine , antagonized the inhibition of histamine release by adenosine ( and 2-chloroadenosine ) but failed to reverse the attenuation of ltc4 generation by the nucleoside .
C0001443
adenosine
C0000275
2-chloroadenosine