Angiogenesis is the ability to create new blood vessels to supply blood to an area. Under most circumstances, such activity stops when body reaches maturity. There are instances where the body has evidently restored such creative powers when coronary arteries are occluded and bridges are created to go around the occlusion. When cancer cells begin, there is plenty of nutrition in the fluid surrounding the cells. As the cells begin to pack together, the inner cells fall behind in nourishment and begin sending out chemical signals which are targeted for the nearest artery. These signals are interpreted by certain receptor sites on the artery as orders to send a tributary to the cancer mass.
Once the tributary is completed, the cancer can grow much more rapidly, since the inner cells can also multiply. But this is not the only negative of angiogenesis; the cancer will now use the new blood supply to send out cancer seeds (cells) to distant parts of the body which then begin the whole process over again anti-angiogenesis is the use of certain substances to inhibit the growth of new blood vessels. There are several anti-angiogenesis available right now.