the pharmacokinetics of 1-beta-d-arabinofuranosylcytosine ( ara-c ) and 9-beta-d-arabinofuranosyl-2-fluoroadenine ( f-ara-a ) and their respective 5'-triphosphates , ara-ctp and f-ara-atp , were compared in human plasma and circulating leukemic blasts ( clb ) since initial phosphorylation of ara-c and f-ara-a is catalyzed by the same enzyme , deoxycytidine kinase .
C0031715
phosphorylation
C0011486
deoxycytidine kinase