Answer
Angiogenesis is the production and proliferation of blood vessels ( especially capillary networks).
As tumors grow, the new tissues formed constantly threaten to outstrip the available vasculation and blood support. Tumors promote angiogenesis to ensure adequate supplies of nutrients and oxygen, as well as to guarantee timely removal of metabolic wastes and carbon dioxide.
Work Step by Step
Anti-angiogenic drugs break up angiogenic capillary networks associated with tumors. Some examples of anti-angiogenic drugs are angiostatin and endostatin.
