we labeled mouse 3t3 fibroblasts , synchronized in g0 or s phase , from [ 3h ] cytidine or [ 3h ] deoxycytidine and measured the flow of isotope into and through deoxycytidine nucleotide pools , including the two deoxyliponucleotides dcdp choline and dcdp ethanolamine .
C0010715
cytidine
C0011485
deoxycytidine