. 5-Fluorouracil is a pyrimidine antimetabolite and antimetabolite, which inhibitsthymidylate synthase and interferes with RNA synthesis and consequently inhibits fibroblasts. Moreover, it has been noted to selectively blocks collagen synthesis,
. 5-Fluorouracil is a pyrimidine antimetabolite and antimetabolite, which inhibits<br>thymidylate synthase and interferes with RNA synthesis and consequently inhibits fibroblasts. Moreover, it has been noted to selectively blocks collagen synthesis,