after treatment with continuous infusion of 5-aza-dcyd ( 1.0 mg/kg/h ) the blood leukemic cells were isolated and incubated in vitro with [ 6-3h ] deoxycytidine and the incorporation of radioactivity into 5-methylcytosine and cytosine of dna determined .
C0049308
5-methylcytosine
C0010843
cytosine