affinities of adenosine , 2-chloroadenosine , nitrobenzylthioinosine and dipyridamole for the nucleoside transport system derived from binding and influx methodologies were equivalent which confirms that [ 3h ] nitrobenzylthioinosine binding sites are closely associated with the nucleoside transporter .
C0001443
adenosine
C0000275
2-chloroadenosine