direct measurements of the ribonucleoside and deoxyribonucleoside triphosphate pool sizes have been made , and the pathways and rates of metabolism of adenine , hypoxanthine , guanine , guanosine , deoxyadenosine , and deoxyguanosine and of uridine , cytidine , deoxycytidine , deoxyuridine , and thymidine have been determined .
C0010715
cytidine
C0011485
deoxycytidine