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. 2003 Oct;2(5):1003–1008. doi: 10.1128/EC.2.5.1003-1008.2003

FIG. 1.

FIG. 1.

Uptake of [3H]adenosine by the tbat1-null mutant. Uptake of 20 nM [3H]adenosine was inhibited by inosine (filled squares) with an IC50 of 1.1 ± 0.1 μM. Adenine failed to inhibit [3H]adenosine at concentrations as high as 100 μM when it was added alone (open squares). The inhibition induced by 1 mM adenine is attributable to a low-affinity inhibition of P1.

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