Taxol is a trademark of Paclitaxel. Originally, Paclitaxel is bark from a single Pacific yew tree, Taxus brevifolia.what your thinking is here on Taxol
Paclitaxel is used as an antiproliferative agent for the prevention of restenosis (recurrent narrowing) of coronary stents; locally delivered to the wall of the coronary artery, a paclitaxel coating limits the growth of neointima (scar tissue) within stents.
All above info stolen and unscrupulously copied from wikipedia at:
http://en.wikipedia.org/wiki/Taxol
(**) - Note - They talk about arteries, but there might be a hint/lead there?