3.5.4.5 2'-deoxycytidine + H2O - 3.5.4.5 5-aza-2'-deoxycytidine + H2O 5-AZA-CdR shows an antineoplastic action on 3T3 cells and V5 cells transduced with CR deaminase gene, pharmakokinetic analysis in mice, overview 3.5.4.5 cytidine + H2O - 3.5.4.5 cytidine + H2O cytidine deaminase is a key enzyme in the catabolism of cytosine nucleoside analogues, since their deamination results in a loss of their pharmacological activity 3.5.4.5 cytosine arabinoside + H2O - 3.5.4.5 cytosine beta-D-arabinofuranoside + H2O - 3.5.4.5 deoxycytidine + H2O - 3.5.4.5 additional information cytidine deaminase plays an important role in the activation of the anticancer drug capesitabine in the human body