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Seven-minute time course of [3H]uridine uptake in HeLa cells. [3H]Uridine uptake is effectively linear through 7 minutes and approximately 80% blocked by 100 nM NBMPR and >95% blocked by 5 mM uridine and 100 µM NBMPR. The best fit line represents a one-phase association. All values are reported as mean ± S.D. (n = 3).
