with homogenates of yoshida sarcoma or liver uracil inhibited degradation of 5-fu greatly , phosphorylation of 5-fu by alpha-d-ribose 1-phosphate ( riblp ) and atp to some extent , and phosphorylation by 5-phospho-alpha-d-ribosyl diphosphate ( ppribp ) very little .
C0041917
uracil
C0016360
fu