A patient with lymphoma that involves his small intestines is treated with a various chemotherapeutic agents, including vincristine. This antimitotic substance acts on
A) α-actinin
B) dynein
C) tubulin
D) myosin I
E) actin

Question

Quizplus · Accepted Answer

Vincristine is an antimitotic substance that inhibits microtubule formation by binding to tubulin, preventing its polymerization and disrupting the mitotic spindle assembly. This mechanism of action ultimately leads to cell cycle arrest and apoptosis in rapidly dividing cells, such as cancer cells.

A Patient with Lymphoma That Involves His Small Intestines Is