Angiogenesis is the development of fresh blood vessels. This procedure includes the relocation, development, and separation of endothelial cells, which line within mass of veins. The procedure of angiogenesis is constrained by synthetic signals in the body. Angiogenesis is the formation of new blood vessels. This process involves the migration, growth, and differentiation of endothelial cells, which line the inside wall of blood vessels. The process of angiogenesis is controlled by chemical signals in the body. Cancer biologist Robert Benezra explains angiogenesis, the process by which new blood vessels form, and how it relates to cancer research. Angiogenesis is the process by which new blood vessels form, allowing the delivery of oxygen and nutrients to the body's tissues