Abstract
dCTP pools equilibrated to equivalent specific activities in Chinese hamster ovary cells or in nuclei after incubation of cells with radiolabeled nucleosides, indicating that dCTP in nuclei does not constitute a distinct metabolic pool. In the G1 phase, [5-3H]deoxycytidine labeled dCTP to unexpectedly high specific activities. This may explain reports of replication-excluded DNA precursor pools.
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