the affinities of adenosine and 2-chloroadenosine for the nucleoside transport system of guinea pig myocytes were evaluated indirectly by studying the inhibition of the binding of [ 3h ] nitrobenzylthioinosine and directly by measuring the influx of [ 3h ] radiolabeled substrates .
C0001443
adenosine
C0000275
2-chloroadenosine