the authors examined the relationship between the level of thymidylate synthase ( ts ) and the sensitivity to 5-fluorouracil ( 5-fu ) and uft , a combined oral preparation of 1- ( 2-tetrahydrofuryl ) -5-fluorouracil ( tegafur ) and uracil in a molar ratio of 1:4 .
C0016360
5-fluorouracil
C0016778
tegafur